File "sl-practice-paper-1-1.html"
Path: /ThinkIB/chem/chemistry/page/31516/sl-practice-paper-1-1html
File size: 147.85 KB
MIME-type: text/html
Charset: utf-8
<!DOCTYPE html>
<html lang="en">
<head>
<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-K5VSFSN');
</script>
<!-- End Google Tag Manager -->
<meta http-equiv="x-ua-compatible" content="IE=Edge">
<title>DP Chemistry: SL Practice Paper 1 (1)</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="robots" content="index, follow"><meta name="googlebot" content="noarchive">
<!-- Removed by WebCopy --><!--<base href="https://www.thinkib.net">--><!-- Removed by WebCopy --><meta name="keywords" content="chemistry, inthinking, IB, IBDP, IBMYP, thinkib, baccalaureate, education"><meta name="description" content="To give your students access to this page you will need to change the access from "Filtered student access" to "Direct student access"."><meta prefix="og: http://ogp.me/ns#" property="og:title" name="og:title" content="DP Chemistry: SL Practice Paper 1 (1)">
<meta prefix="og: http://ogp.me/ns#" property="og:image" content="media/ib/chemistry/images/Exams/Taking exams.jpg">
<meta prefix="og: http://ogp.me/ns#" property="og:description" name="og:description" content="To give your students access to this page you will need to change the access from "Filtered student access" to "Direct student access".">
<meta prefix="og: http://ogp.me/ns#" property="og:url" name="og:url" content="https://www.thinkib.net/chemistry/page/31516/sl-practice-paper-1-1">
<meta prefix="og: http://ogp.me/ns#" property="og:site_name" name="og:site_name" content="Subscription websites for IB teachers & their classes">
<meta prefix="og: http://ogp.me/ns#" property="og:locale" name="og:locale" content="en">
<meta prefix="og: http://ogp.me/ns#" property="og:type" name="og:type" content="website">
<meta name="description" content="To give your students access to this page you will need to change the access from "Filtered student access" to "Direct student access".">
<meta name="image" content="media/ib/chemistry/images/Exams/Taking exams.jpg">
<meta name="keywords" content="Chemistry, Inthinking, IB, IBDP, IBMYP, Thinkib, Baccalaureate, Education, inthinking, thinkib, baccalaureate, education, diploma, international baccalaureate, international schools, high school degree, middle years, middle years programme, international education, IB diploma">
<meta itemprop="name" content="DP Chemistry: SL Practice Paper 1 (1)">
<meta itemprop="description" content="To give your students access to this page you will need to change the access from "Filtered student access" to "Direct student access".">
<meta itemprop="image" content="media/ib/chemistry/images/Exams/Taking exams.jpg">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="DP Chemistry: SL Practice Paper 1 (1)">
<meta name="twitter:description" content="To give your students access to this page you will need to change the access from "Filtered student access" to "Direct student access".">
<meta name="twitter:image" content="media/ib/chemistry/images/Exams/Taking exams.jpg">
<meta name="twitter:creator" content="@InThinker">
<link href="../../../css/bootstrap.min-1.css" rel="stylesheet" media="screen">
<link href="../../../css/font-awesome-4.7.0/css/font-awesome.min-1.css" rel="stylesheet">
<link href="../../../css/top-nav.min-1.css?v=202211301945" rel="stylesheet" media="screen">
<link href="../../../css/style.min-1.css?v=202212191040" rel="stylesheet" media="screen">
<link href="../../../css/style-ib.min-1.css?v=202211282000" rel="stylesheet" media="screen">
<link rel="stylesheet" type="text/css" href="../../../js/jq-fancybox/jquery.fancybox.min-1.css">
<link href="../../../js/jq-fancybox/jquery.fancybox.min-1.css" type="text/css" rel="stylesheet">
<script>function inIframe () {try {return window.self !== window.top;} catch (e) {return true;}}if( inIframe() ) { window.location.href = "/mb/embed?mbtest=1&ref=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"; }</script><link rel="stylesheet" href="../../../assets/css/ckeditor5-custom-1.css" type="text/css"><link rel="stylesheet" href="../../../css/snippets.min-1.css?v=202210181500"><link rel="stylesheet" href="../../../css/article.min-1.css?v=202212151220"><link rel="stylesheet" href="../../../css/toplevel-map-1.css"><link rel="stylesheet" href="../../../css/std-access/std-access-tools.min-2.css?v=202204280950"><link href="../../../css/std-access/std-assignments.min-1.css?v=20220127" rel="stylesheet" media="screen"><link href="../../../js/jq-datepicker/datepicker.min-1.css" type="text/css" rel="stylesheet"><link rel="stylesheet" href="../../../css/side-nav.min-1.css?v=20220520"><script src="../../../js/localdates.min-1.js?v=202009290900"></script><script src="../../../js/ifvisible.min-1.js"></script><script>ifvisible.setIdleDuration(300);</script><script>var tibSitename = "chemistry";</script>
<script>
const SITE_TAG = "ib"
const SITE_WEB = "ThinkIB.net"
const SITE_DOMAIN = "www.thinkib.net"
const SITE_URI = "https://thinkib.net"
const SITE_CLIENT_CODE = "TIB000001"
let imageThinker = "../../../img/header-thinker-ib.svg";
let imageStudent = "img/header-student-thinkib.svg";
</script>
<script>var userHash = "IB Docs (2) Team", userTicket = "IB Docs (2) Team";</script><script src="../../../js/user/local-stats.min-1.js?v=202102101800"></script><link rel="apple-touch-icon-precomposed" sizes="57x57" href="../../../img/favicon/thinkib/apple-touch-icon-57x57-1.png"><link rel="apple-touch-icon-precomposed" sizes="114x114" href="../../../img/favicon/thinkib/apple-touch-icon-114x114-1.png"><link rel="apple-touch-icon-precomposed" sizes="72x72" href="../../../img/favicon/thinkib/apple-touch-icon-72x72-1.png"><link rel="apple-touch-icon-precomposed" sizes="144x144" href="../../../img/favicon/thinkib/apple-touch-icon-144x144-1.png"><link rel="apple-touch-icon-precomposed" sizes="60x60" href="../../../img/favicon/thinkib/apple-touch-icon-60x60-1.png"><link rel="apple-touch-icon-precomposed" sizes="120x120" href="../../../img/favicon/thinkib/apple-touch-icon-120x120-1.png"><link rel="apple-touch-icon-precomposed" sizes="76x76" href="../../../img/favicon/thinkib/apple-touch-icon-76x76-1.png"><link rel="apple-touch-icon-precomposed" sizes="152x152" href="../../../img/favicon/thinkib/apple-touch-icon-152x152-1.png"><link rel="icon" type="image/png" href="../../../img/favicon/thinkib/favicon-196x196-1.png" sizes="196x196"><link rel="icon" type="image/png" href="../../../img/favicon/thinkib/favicon-96x96-1.png" sizes="96x96"><link rel="icon" type="image/png" href="../../../img/favicon/thinkib/favicon-32x32-1.png" sizes="32x32"><link rel="icon" type="image/png" href="../../../img/favicon/thinkib/favicon-16x16-1.png" sizes="16x16"><link rel="icon" type="image/png" href="../../../img/favicon/thinkib/favicon-128-1.png" sizes="128x128"><meta name="application-name" content=" "><meta name="msapplication-TileColor" content="#FFFFFF"><meta name="msapplication-TileImage" content="https://www.thinkib.net/img/favicon/thinkib/mstile-144x144.png"><meta name="msapplication-square70x70logo" content="https://www.thinkib.net/img/favicon/thinkib/mstile-70x70.png"><meta name="msapplication-square150x150logo" content="https://www.thinkib.net/img/favicon/thinkib/mstile-150x150.png"><meta name="msapplication-wide310x150logo" content="https://www.thinkib.net/img/favicon/thinkib/mstile-310x150.png"><meta name="msapplication-square310x310logo" content="https://www.thinkib.net/img/favicon/thinkib/mstile-310x310.png">
</head>
<body onunload="" class="">
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-K5VSFSN" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- End Google Tag Manager (noscript) -->
<div id="header">
<div class="wmap">
<div class="layout-wrapper">
<div class="container-fluid">
<div class="pull-right visible-phone">
<a href="https://www.inthinking.net">
<img class="header-logo" src="../../../img/header-logo-1.svg" style="height: 45px; width: auto;">
</a>
</div>
<div class="visible-phone" style="clear:both;"></div>
<div class="pull-left">
<h1><a href="/chemistry"><span style="">IBDP Chemistry brought to you by the IB Docs (2) Team</span></a></h1>
<p class="slogan hidden-phone"><span class="slogan"><em>InThinking</em> Subject Sites for teachers & their classes</span></p>
<p class="hidden-phone">Website by <strong>Geoffrey Neuss</strong></p>
<p class="hidden-phone">Updated 2 JIB Docs (2) Teamary 2023</p>
</div>
<div class="visible-phone" style="clear:both;"></div>
<div class="pull-right text-right header-right">
<a class="hidden-phone" href="https://www.inthinking.net">
<img class="header-logo" src="../../../img/header-logo-1.svg" style="height: 70px; width: auto;">
</a>
<div class="search">
<a href="#" class="toggle-menu-search" data-toggle="dropdown">
<i class="fa fa-2x fa-search"></i>
</a>
</div>
</div>
</div>
</div>
</div>
</div>
<div id="topmenu">
<div class="layout-wrapper">
<div>
<nav class="top-nav"><ul class="level-0"><li class=""><a href="../../../chemistry.html"><i class="fa fa-home"></i> Home</a><ul><li class=""><a href="/subscribe"><i class="fa fa-globe fixwidth"></i> Subscribe today</a></li><li class=""><a href="chemistry/sitemap"><i class="fa fa-sitemap fixwidth"></i> Sitemap</a></li><li class=""><a href="chemistry/last-updates"><i class="fa fa-file-text-o fixwidth"></i> Latest updates</a></li><li class=""><a href="chemistry/teaching-materials"><i class="fa fa-puzzle-piece fixwidth"></i> Teaching materials</a></li><li class=""><a href="chemistry/blog"><i class="fa fa-paperclip fixwidth"></i> Blog</a></li><li class=""><a href="chemistry/twitter"><i class="fa fa-twitter fixwidth"></i> Tweets</a></li><li><a><i class="fa fa-external-link fixwidth"></i> <em>InThinking</em> sites</a><ul><li><a class="text-right" href="https://thinkib.net"><span class="pull-left"> All subjects</span> <em style="opacity: .8;">www.thinkib.net</em></a></li><li><a href="https://www.thinkib.net/biology" target="_blank">IBDP Biology</a></li><li><a href="https://www.thinkib.net/businessmanagement" target="_blank">IBDP Business Management</a></li><li><a href="https://www.thinkib.net/economics" target="_blank">IBDP Economics</a></li><li><a href="https://www.thinkib.net/englishalit" target="_blank">IBDP English A Literature</a></li><li><a href="https://www.thinkib.net/englishalanglit" target="_blank">IBDP English A: Language & Literature</a></li><li><a href="https://www.thinkib.net/englishb" target="_blank">IBDP English B</a></li><li><a href="https://www.thinkib.net/ess" target="_blank">IBDP Environmental Systems & Societies</a></li><li><a href="https://www.thinkib.net/frenchb" target="_blank">IBDP French B</a></li><li><a href="https://www.thinkib.net/geography" target="_blank">IBDP Geography</a></li><li><a href="https://www.thinkib.net/german" target="_blank">IBDP German A: Language & Literature</a></li><li><a href="https://www.thinkib.net/history" target="_blank">IBDP History</a></li><li><a href="https://www.thinkib.net/mathanalysis" target="_blank">IBDP Maths: Analysis & Approaches</a></li><li><a href="https://www.thinkib.net/mathapplications" target="_blank">IBDP Maths: Applications & Interpretation</a></li><li><a href="https://www.thinkib.net/physics" target="_blank">IBDP Physics</a></li><li><a href="https://www.thinkib.net/psychology" target="_blank">IBDP Psychology</a></li><li><a href="https://www.thinkib.net/leadership" target="_blank">IB School Leadership</a></li><li><a href="https://www.thinkib.net/spanisha" target="_blank">IBDP Spanish A</a></li><li><a href="https://www.thinkib.net/spanish-abinitio" target="_blank">IBDP Spanish Ab Initio</a></li><li><a href="https://www.thinkib.net/spanishb" target="_blank">IBDP Spanish B</a></li><li><a href="https://www.thinkib.net/teachmaths" target="_blank">teachMathematics</a></li><li><a href="https://www.thinkib.net/visualarts" target="_blank">IBDP Visual Arts</a></li><li><a href="https://www.thinkib.net/myp-englishalanglit" target="_blank">IBMYP English Language & Literature</a></li><li><a href="https://www.thinkib.net/myp-resources" target="_blank">IBMYP Resources</a></li><li><a href="https://www.thinkib.net/myp-spanishb" target="_blank">IBMYP Spanish Language Acquisition</a></li><li><a href="https://www.thinkib.net/ibcp" target="_blank">IB Career-related Programme</a></li><li><a href="https://www.thinkigcse.net" target="_blank"><strong>ThinkIGCSE</strong> - <em>Subject sites for IGCSE teachers</em></a></li></ul></li></ul><li><li><a href="../16256/start-here-1.html">Start here</a><ul class="level-1"><li><a href="../36257/how-to-navigate-the-site-1.html">How to navigate the site</a></li><li><a href="../24826/using-student-access--1.html" class="father">Using student access </a><ul class="level-2"><li><a href="../27330/creating-student-accounts--1.html">Creating student accounts </a></li><li><a href="../32806/short-cut-to-give-students-access-to-a-page-1.html">Short cut to give students access to a page</a></li><li><a href="../27328/setting-assignments-1.html">Setting assignments</a></li><li><a href="../27351/managing-student-accounts-mark-book-1.html">Managing student accounts & mark book</a></li><li><a href="../27362/using-qbank-1.html">Using qBank</a></li></ul></li><li><a href="../16257/for-teachers-new-to-ib-chemistry-1.html" class="father">For teachers new to IB Chemistry</a><ul class="level-2"><li><a href="../16258/dart-board-chemistry-1.html">'Dart board' chemistry</a></li><li><a href="../16274/essential-resources-1.html">Essential resources</a></li><li><a href="../16276/syllabus-1.html">Syllabus</a></li><li><a href="../16278/possible-teaching-schedule-1.html">Possible teaching schedule</a></li></ul></li></ul></li><li><a href="../46318/teaching-learning-resources-1.html">Teaching, learning & resources</a><ul class="level-1"><li><a href="../17394/approaches-to-teaching-1.html" class="father">Approaches to teaching</a><ul class="level-2"><li><a href="../17395/teaching-styles--1.html">Teaching styles </a></li><li><a href="../17396/teaching-skills--1.html">Teaching skills </a></li><li><a href="../17398/workshops--1.html">Workshops </a></li><li><a href="../17397/teacher-recommendations--1.html">Teacher recommendations </a></li></ul></li><li><a href="../27280/approaches-to-learning-1.html" class="father">Approaches to learning</a><ul class="level-2"><li><a href="../27208/thinking-skills-1.html">Thinking skills</a></li><li><a href="../27216/reflection-1.html">Reflection</a></li><li><a href="../27209/communication-skills-1.html">Communication skills</a></li><li><a href="../27211/social-skills-1.html">Social skills</a></li><li><a href="../27232/self-management-1.html">Self-management</a></li><li><a href="../27312/research-1.html">Research</a></li></ul></li><li><a href="../17120/resources-1.html" class="father">Resources</a><ul class="level-2"><li><a href="../17119/ib-specific-books-1.html">IB specific books</a></li><li><a href="../17121/general-text-books-1.html">General text books</a></li><li><a href="../17131/post-ib-text-books-1.html">Post IB text books</a></li><li><a href="../17132/journals-1.html">Journals</a></li><li><a href="../17133/newspaper-articles-1.html">Newspaper articles</a></li><li><a href="../17124/demonstrations-1.html">Demonstrations</a></li><li><a href="../17139/chemistry-videos-1.html">Chemistry videos</a></li><li><a href="../17140/web-links-1.html">Web links</a></li><li><a href="../17138/chemistry-apps-1.html">Chemistry apps</a></li><li><a href="../17348/novel-uses-for-the-ib-data-booklet--1.html">Novel uses for the IB data booklet </a></li><li><a href="../17392/books-for-enjoyment--1.html">Books for enjoyment </a></li></ul></li><li><a href="../27313/unit-plans-1.html">Unit plans</a></li><li><a href="../22523/critical-thinking-1.html">Critical thinking</a></li><li><a href="../18044/do-you-speak-ib-1.html" class="father">Do you speak IB?</a><ul class="level-2"><li><a href="../17382/changes-to-terminology-1.html">Changes to terminology</a></li></ul></li><li><a href="../32761/school-closures-and-distance-learning-1.html">School closures and distance learning</a></li></ul></li><li><a href="../16347/core-ahl-1.html">Core & AHL</a><ul class="level-1"><li><a href="../16344/syllabus-1.html">Syllabus</a></li><li><a href="../16329/teaching-each-topic-sub-topic-1.html" class="father">Teaching each topic & sub-topic</a><ul class="level-2"><li><a href="../16328/topic-1-1.html">Topic 1</a></li><li><a href="../16907/topics-2-12--1.html">Topics 2 & 12 </a></li><li><a href="../17021/topics-3-13-1.html">Topics 3 & 13</a></li><li><a href="../17114/topics-4-14-1.html">Topics 4 & 14</a></li><li><a href="../17669/topics-5-15--1.html">Topics 5 & 15 </a></li><li><a href="../17848/topics-6-16-1.html">Topics 6 & 16</a></li><li><a href="../18038/topics-7-17--1.html">Topics 7 & 17 </a></li><li><a href="../18120/topics-8-18--1.html">Topics 8 & 18 </a></li><li><a href="../18350/topics-9-19-1.html">Topics 9 & 19</a></li><li><a href="../18475/topics-10-20--1.html">Topics 10 & 20 </a></li><li><a href="../17285/topics-11-21--1.html">Topics 11 & 21 </a></li></ul></li><li><a href="../16441/the-nature-of-science-1.html" class="father">The Nature of Science</a><ul class="level-2"><li><a href="../16450/key-terms-concepts-1.html">Key terms & concepts</a></li><li><a href="../34566/nos-critical-thinking-1.html">NOS & Critical Thinking</a></li><li><a href="../32100/how-the-elements-were-named-1.html">How the elements were named</a></li><li><a href="../36753/the-culture-of-chemistry-1.html">The Culture of Chemistry</a></li><li><a href="../17333/nature-of-science-questions-1.html">Nature of Science questions</a></li></ul></li><li><a href="../16413/incorporating-im-tok-utilization-etc-1.html" class="father">Incorporating IM, TOK, 'Utilization' etc.</a><ul class="level-2"><li><a href="../16414/topic-1-1.html">Topic 1</a></li><li><a href="../16916/topics-2-12-1.html">Topics 2 & 12</a></li><li><a href="../17023/topics-3-13--1.html">Topics 3 & 13 </a></li><li><a href="../17055/topics-4-14--1.html">Topics 4 & 14 </a></li><li><a href="../17270/topics-5-15--1.html">Topics 5 & 15 </a></li><li><a href="../17854/topics-6-16--1.html">Topics 6 & 16 </a></li><li><a href="../18041/topics-7-17--1.html">Topics 7 & 17 </a></li><li><a href="../18099/topics-8-18-1.html">Topics 8 & 18</a></li><li><a href="../18349/topics-9-19--1.html">Topics 9 & 19 </a></li><li><a href="../18420/topics-10-20-1.html">Topics 10 & 20</a></li><li><a href="../17269/topics-11-21--1.html">Topics 11 & 21 </a></li></ul></li><li><a href="../17866/utilization-relationships-between-topics--1.html" class="father">'Utilization' - Relationships between topics </a><ul class="level-2"><li><a href="../17867/relating-topics-4-14-to-all-the-other-topics-1.html">Relating Topics 4 & 14 to all the other topics</a></li><li><a href="../17868/example-of-connections-1.html">Example of connections</a></li><li><a href="../34404/hydroxychloroquine-ib-chemistry-1.html">Hydroxychloroquine & IB Chemistry</a></li><li><a href="../35418/ammonium-nitrate-ib-chemistry-1.html">Ammonium nitrate & IB Chemistry</a></li></ul></li><li><a href="../16685/multiple-choice-tests-for-each-topic-1.html" class="father">Multiple choice tests for each topic</a><ul class="level-2"><li><a href="../16687/sl-questions-by-topic-1.html">SL Questions by topic</a></li><li><a href="../16688/hl-questions-by-topic-1.html">HL Questions by topic</a></li></ul></li></ul></li><li><a href="../19044/options--1.html">Options </a><ul class="level-1"><li><a href="../19503/option-a--1.html" class="father">Option A </a><ul class="level-2"><li><a href="../19504/introduction-to-materials-science--1.html">Introduction to materials science </a></li><li><a href="../19519/metals-and-icp-spectroscopy-1.html">Metals and ICP spectroscopy</a></li><li><a href="../19541/catalysts--1.html">Catalysts </a></li><li><a href="../19580/liquid-crystals-1.html">Liquid crystals</a></li><li><a href="../19665/polymers--1.html">Polymers </a></li><li><a href="../19672/nanotechnology-1.html">Nanotechnology</a></li><li><a href="../19843/environmental-impact-plastics-1.html">Environmental impact - plastics</a></li><li><a href="../19858/superconducting-metals-x-ray-crystallography--1.html">Superconducting metals & X-ray crystallography </a></li><li><a href="../19666/condensation-polymers-1.html">Condensation polymers</a></li><li><a href="../19916/environmental-impact-heavy-metals-1.html">Environmental impact - heavy metals</a></li></ul></li><li><a href="../19284/option-b--1.html" class="father">Option B </a><ul class="level-2"><li><a href="../19290/introduction-to-biochemistry--1.html">Introduction to biochemistry </a></li><li><a href="../19287/proteins-enzymes--1.html">Proteins & enzymes </a></li><li><a href="../19291/lipids-1.html">Lipids</a></li><li><a href="../19299/carbohydrates--1.html">Carbohydrates </a></li><li><a href="../19305/vitamins--1.html">Vitamins </a></li><li><a href="../19313/biochemistry-the-environment--1.html">Biochemistry & the environment </a></li><li><a href="../19336/proteins-enzymes-ahl--1.html">Proteins & enzymes (AHL) </a></li><li><a href="../19347/nucleic-acids--1.html">Nucleic acids </a></li><li><a href="../19361/biological-pigments--1.html">Biological pigments </a></li><li><a href="../19366/stereochemistry-in-biomolecules-1.html">Stereochemistry in biomolecules</a></li></ul></li><li><a href="../19390/option-c--1.html" class="father">Option C </a><ul class="level-2"><li><a href="../19391/energy-sources-1.html">Energy sources</a></li><li><a href="../19407/fossil-fuels-1.html">Fossil fuels</a></li><li><a href="../19411/nuclear-fusion-nuclear-fission-reactions-1.html">Nuclear fusion & nuclear fission reactions</a></li><li><a href="../19429/solar-energy-1.html">Solar energy</a></li><li><a href="../19437/environmental-impact-global-warming-1.html">Environmental impact - global warming</a></li><li><a href="../19453/electrochemistry-rechargeable-batteries-fuel-cells-1.html">Electrochemistry, rechargeable batteries & fuel cells</a></li><li><a href="../19458/nuclear-fusion-fission-hl--1.html">Nuclear fusion & fission (HL) </a></li><li><a href="../19470/photovoltaic-cells-and-dsscs-1.html">Photovoltaic cells and DSSCs</a></li></ul></li><li><a href="../19078/option-d-1.html" class="father">Option D</a><ul class="level-2"><li><a href="../19079/pharmaceutical-products-drug-action--1.html">Pharmaceutical products & drug action </a></li><li><a href="../19158/aspirin-penicillin--1.html">Aspirin & penicillin </a></li><li><a href="../19174/opiates-1.html">Opiates</a></li><li><a href="../19184/ph-regulation-of-the-stomach-1.html">pH regulation of the stomach</a></li><li><a href="../19194/antiviral-medications--1.html">Antiviral medications </a></li><li><a href="../19211/environmental-impact-of-some-medications-1.html">Environmental impact of some medications</a></li><li><a href="../19254/taxol-a-chiral-auxiliary-case-study-1.html">Taxol - a chiral auxiliary case study</a></li><li><a href="../19258/nuclear-medicine--1.html">Nuclear medicine </a></li><li><a href="../19273/drug-detection-analysis--1.html">Drug detection & analysis </a></li></ul></li></ul></li><li><a href="../16592/practical-scheme-of-work-ia--1.html">Practical scheme of work & IA </a><ul class="level-1"><li><a href="../16682/internal-assessment-1.html" class="father">Internal Assessment</a><ul class="level-2"><li><a href="../18892/scaffolding-the-investigation-1.html">'Scaffolding' the investigation</a></li><li><a href="../18896/timing-organisation--1.html">Timing & organisation </a></li><li><a href="../18905/choosing-the-research-question-1.html">Choosing the research question</a></li><li><a href="../18946/personal-engagement-1.html">Personal engagement</a></li><li><a href="../18950/exploration-1.html">Exploration</a></li><li><a href="../18957/analysis-1.html">Analysis</a></li><li><a href="../18965/evaluation-1.html">Evaluation</a></li><li><a href="../18966/communication-1.html">Communication</a></li><li><a href="../19882/internal-standardization-of-the-ia-1.html">Internal standardization of the IA</a></li><li><a href="../19901/submitting-the-samples-for-moderation-2.html">Submitting the samples for moderation</a></li><li><a href="../33754/ten-suggestions-for-ias-using-secondary-data-1.html">Ten suggestions for IAs using secondary data</a></li><li><a href="../37544/gaining-full-marks-for-a-databased-ia--1.html">Gaining full marks for a databased IA </a></li><li><a href="../19506/ia-example-marking-exercise--1.html">IA example & marking exercise </a></li><li><a href="../23929/genuine-examples-of-moderated-ia-reports-1.html">Genuine examples of moderated IA reports</a></li><li><a href="../25234/examples-of-teacher-marked-ia-reports--1.html">Examples of teacher-marked IA reports </a></li><li><a href="../37542/history-of-internal-assessment-1.html">History of Internal Assessment</a></li></ul></li><li><a href="../16598/mandatory-laboratory-components-1.html" class="father">Mandatory laboratory components</a><ul class="level-2"><li><a href="../16613/formula-of-magnesium-oxide--1.html">Formula of magnesium oxide </a></li><li><a href="../16612/determining-the-mr-of-an-unknown-gas-1.html">Determining the <i>M</i><sub>r</sub> of an unknown gas</a></li><li><a href="../16615/acid-base-titrations--1.html">Acid-base titrations </a></li><li><a href="../16616/a-green-acid-base-practical-1.html">A green acid-base practical</a></li><li><a href="../16617/analysis-of-aspirin-tablets-1.html">Analysis of aspirin tablets</a></li><li><a href="../16618/caco3-in-egg-shells-1.html">CaCO<sub>3</sub> in egg shells</a></li><li><a href="../16644/enthalpy-changes-1.html">Enthalpy changes</a></li><li><a href="../16631/reaction-rates-1.html">Reaction rates</a></li><li><a href="../16635/rate-dependent-factors-1.html">Rate-dependent factors</a></li><li><a href="../16636/determining-ea-for-a-reaction-1.html">Determining <i>E</i><sub>a</sub> for a reaction</a></li><li><a href="../16637/iodination-of-propanone-1.html">Iodination of propanone</a></li><li><a href="../18144/titrations-with-a-ph-meter-1.html">Titrations with a pH meter</a></li><li><a href="../18355/redox-titration-with-kmno4--1.html">Redox titration with KMnO<sub>4</sub> </a></li><li><a href="../16640/voltaic-cells-1.html">Voltaic cells</a></li><li><a href="../16659/3-d-molecular-modelling--1.html">3-D molecular modelling </a></li></ul></li><li><a href="../17168/other-good-practicals-1.html" class="father">Other good practicals</a><ul class="level-2"><li><a href="../17196/common-chemical-reactions-1.html">Common chemical reactions</a></li><li><a href="../227/elements-oxides-of-the-third-period--1.html">Elements & oxides of the third period </a></li><li><a href="../17239/the-halogens-1.html">The halogens</a></li><li><a href="../17162/boiling-points-of-mixtures-1.html">Boiling points of mixtures</a></li><li><a href="../17170/polarity-of-molecules-1.html">Polarity of molecules</a></li><li><a href="../18083/le-chateliers-principle--1.html">Le Chatelier's principle </a></li><li><a href="../19582/determining-kc-for-an-esterification-reaction-1.html">Determining <i>K</i><sub>c</sub> for an esterification reaction</a></li><li><a href="../18164/redox-reactions-of-vanadium--1.html">Redox reactions of vanadium </a></li><li><a href="../18351/chlorine-in-swimming-pools--1.html">Chlorine in swimming pools </a></li><li><a href="../18178/analysis-of-cuii-ions-in-solution--1.html">Analysis of Cu(II) ions in solution </a></li><li><a href="../18179/percentage-of-copper-in-brass-1.html">Percentage of copper in brass</a></li><li><a href="../18356/electrolytic-cells--1.html">Electrolytic cells </a></li><li><a href="../18598/reactions-of-organic-compounds-1.html">Reactions of organic compounds</a></li><li><a href="../18752/hydrolysis-of-halogenoalkanes-1.html">Hydrolysis of halogenoalkanes</a></li><li><a href="../18784/preparation-of-13-dinitrobenzene--1.html">Preparation of 1,3-dinitrobenzene </a></li><li><a href="../19022/determination-of-an-organic-structure-1.html">Determination of an organic structure</a></li><li><a href="../19887/preparation-of-nylon-66-1.html">Preparation of nylon 6,6</a></li><li><a href="../19343/determination-of-vitamin-c-content--1.html">Determination of vitamin C content </a></li><li><a href="../19342/hydrolysis-of-starch--1.html">Hydrolysis of starch </a></li><li><a href="../19159/preparation-purification-of-aspirin--1.html">Preparation & purification of aspirin </a></li></ul></li><li><a href="../18851/ict-in-practical-work-1.html" class="father">ICT in practical work</a><ul class="level-2"><li><a href="../18852/data-logging--1.html">Data logging </a></li><li><a href="../18853/software-for-graph-plotting--1.html">Software for graph plotting </a></li><li><a href="../18854/spreadsheets-for-data-processing--1.html">Spreadsheets for data processing </a></li><li><a href="../18855/databases-1.html">Databases</a></li><li><a href="../18856/computer-modelling-simulations--1.html">Computer modelling & simulations </a></li></ul></li><li><a href="../16594/group-4-project-1.html" class="father">Group 4 Project</a><ul class="level-2"><li><a href="../16595/practicalities-1.html">Practicalities</a></li><li><a href="../16596/reflective-statement--2.html">Reflective statement </a></li></ul></li><li><a href="../16666/a-new-laboratory-1.html">A new laboratory?</a></li></ul></li><li class="selected"><a href="../16284/exams-1.html">Exams</a><ul class="level-1"><li><a href="../16286/essential-facts-1.html" class="father">Essential Facts</a><ul class="level-2"><li><a href="../16287/objectives-command-terms-1.html">Objectives & command terms</a></li><li><a href="../16288/grade-descriptors-1.html">Grade descriptors</a></li><li><a href="../16289/grade-boundaries-1.html">Grade boundaries</a></li></ul></li><li class="selected"><a href="../16302/paper-1-multiple-choice-1.html" class="father">Paper 1 (Multiple Choice)</a><ul class="level-2"><li><a href="../16303/advice-to-students-paper-1-1.html">Advice to students (Paper 1)</a></li><li class="selected"><a href="../31515/practice-paper-1-exams-1.html">Practice Paper 1 exams</a></li></ul></li><li><a href="../16305/paper-2-1.html" class="father">Paper 2</a><ul class="level-2"><li><a href="../16306/advice-to-students-paper-2-1.html">Advice to students (Paper 2)</a></li><li><a href="../16307/areas-of-difficulty-1.html">Areas of difficulty</a></li></ul></li><li><a href="../16313/paper-3--1.html" class="father">Paper 3 </a><ul class="level-2"><li><a href="../16314/advice-to-students-paper-3-1.html">Advice to students (Paper 3)</a></li><li><a href="../16342/data-response-questions-1.html">Data response questions</a></li><li><a href="../20054/experimental-work-questions-1.html">Experimental work questions</a></li></ul></li><li><a href="../16324/the-examination-process-1.html" class="father">The examination process</a><ul class="level-2"><li><a href="../16316/setting-the-exam-papers-1.html">Setting the exam papers</a></li><li><a href="../16317/predicted-grades-1.html">Predicted grades</a></li><li><a href="../16318/marking-the-papers-1.html">Marking the papers</a></li><li><a href="../16319/commenting-on-the-exams-1.html">Commenting on the exams</a></li><li><a href="../16320/grade-awarding-1.html">Grade Awarding</a></li><li><a href="../16321/enquiry-upon-results-1.html">Enquiry upon results</a></li><li><a href="../16322/chief-examiners-report-1.html">Chief Examiner's report</a></li><li><a href="../16323/retaking-the-exam-1.html">Retaking the exam</a></li></ul></li><li><a href="../16325/faqs-1.html">FAQs</a></li></ul></li><li><a href="../3147/ib-core-1.html">IB Core</a><ul class="level-1"><li><a href="../3149/learner-profile-1.html">Learner Profile</a></li><li><a href="../21735/extended-essays--1.html" class="father">Extended Essays </a><ul class="level-2"><li><a href="../21736/overview--1.html">Overview </a></li><li><a href="../21780/responsibilities-1.html">Responsibilities</a></li><li><a href="../21790/resources-1.html">Resources</a></li><li><a href="../21800/research-1.html">Research</a></li><li><a href="../21804/writing-the-essay-1.html">Writing the essay</a></li><li><a href="../21810/assessment-1.html">Assessment</a></li><li><a href="../22434/summary-of-advice--1.html">Summary of advice </a></li><li><a href="../25272/faqs--1.html">FAQs </a></li></ul></li><li><a href="../307/theory-of-knowledge-tok-1.html" class="father">Theory of Knowledge (TOK)</a><ul class="level-2"><li><a href="../41171/the-12-tok-concepts-1.html">The 12 TOK concepts</a></li><li><a href="../3507/why-tok-chemistry-1.html">Why TOK & Chemistry?</a></li><li><a href="../3505/a-modern-paradigm-1.html">A modern paradigm</a></li></ul></li></ul></li><li><a href="../17783/fast-track-to-tests-questions-1.html">Fast track to tests & questions</a><ul class="level-1"><li><a href="../17784/sl-multiple-choice-tests-on-individual-topics-1.html">SL Multiple choice tests on individual topics</a></li><li><a href="../24351/sl-multiple-choice-quizzes-on-sub-topics-1.html">SL Multiple choice 'quizzes' on sub-topics</a></li><li><a href="../31519/sl-practice-paper-1-exams-1.html">SL Practice Paper 1 exams</a></li><li><a href="../17786/sl-questions-on-each-sub-topic-1.html">SL Questions on each sub-topic</a></li><li><a href="../20431/sl-paper-3-section-a-questions-1.html">SL Paper 3 Section A questions</a></li><li><a href="../17792/sl-questions-on-the-options-1.html">SL Questions on the options</a></li><li><a href="../24897/sl-quizzes-on-option-sub-topics--1.html">SL Quizzes on option sub-topics </a></li><li><a href="../17785/hl-multiple-choice-tests-on-individual-topics-1.html">HL Multiple choice tests on individual topics</a></li><li><a href="../24352/hl-multiple-choice-quizzes-on-sub-topics-1.html">HL Multiple choice 'quizzes' on sub-topics</a></li><li><a href="../31520/hl-practice-paper-1-exams--1.html">HL Practice Paper 1 exams </a></li><li><a href="../17787/hl-questions-on-each-sub-topic--1.html">HL Questions on each sub-topic </a></li><li><a href="../20428/hl-paper-3-section-a-questions-1.html">HL Paper 3 Section A questions</a></li><li><a href="../17793/hl-questions-on-the-options-1.html">HL Questions on the options</a></li><li><a href="../24973/hl-quizzes-on-option-sub-topics-1.html">HL Quizzes on option sub-topics</a></li><li><a href="../41573/printable-versions-of-written-tasks--1.html">Printable versions of written tasks </a></li></ul></li><li><a href="../41465/complete-course-for-students--2.html">Complete course for students </a><ul class="level-1"><li><a href="../27988/full-coverage-of-each-topic-and-sub-topic-2.html" class="father">Full coverage of each topic and sub-topic</a><ul class="level-2"><li><a href="../27959/topic-1-stoichiometric-relationships-1.html">Topic 1 : Stoichiometric relationships</a></li><li><a href="../27960/topics-2-12-atomic-structure-1.html">Topics 2 & 12 : Atomic structure</a></li><li><a href="../27965/topics-3-13-periodicity-1.html">Topics 3 & 13 : Periodicity</a></li><li><a href="../27971/topics-4-14-chemical-bonding-structure-1.html">Topics 4 & 14 : Chemical bonding & structure</a></li><li><a href="../27987/topics-5-15-energeticsthermochemistry-1.html">Topics 5 & 15 : Energetics/thermochemistry</a></li><li><a href="../27995/topics-6-16-chemical-kinetics-1.html">Topics 6 & 16 : Chemical kinetics</a></li><li><a href="../28001/topics-7-17-equilibrium--1.html">Topics 7 & 17 : Equilibrium </a></li><li><a href="../28017/topics-8-18-acids-and-bases--1.html">Topics 8 & 18 : Acids and bases </a></li><li><a href="../28031/topics-9-19-redox-process-1.html">Topics 9 & 19 : Redox process</a></li><li><a href="../28061/topics-10-20-organic-chemistry-1.html">Topics 10 & 20 : Organic chemistry</a></li><li><a href="../28038/topics-11-21-measurement-data-processing-analysis-1.html">Topics 11 & 21 : Measurement, data processing & analysis</a></li><li><a href="../28074/option-a-materials--1.html">Option A : Materials </a></li><li><a href="../28087/option-b-biochemistry-1.html">Option B : Biochemistry</a></li><li><a href="../28098/option-c-energy--1.html">Option C : Energy </a></li><li><a href="../28109/option-d-medicinal-chemistry-1.html">Option D : Medicinal chemistry</a></li></ul></li><li><a href="../41553/practical-work-including-ia-group-4-project--1.html" class="father">Practical work (including IA & Group 4 Project) </a><ul class="level-2"><li><a href="../41528/internal-assessment-1.html">Internal Assessment</a></li><li><a href="../41657/group-4-project-1.html">Group 4 Project</a></li></ul></li><li><a href="../41387/approaches-to-learning--1.html" class="father">Approaches to learning </a><ul class="level-2"><li><a href="../41380/thinking-skills-1.html">Thinking skills</a></li><li><a href="../41383/communication-skills-1.html">Communication skills</a></li><li><a href="../41384/social-skills--1.html">Social skills </a></li><li><a href="../41385/self-management-skills-1.html">Self-management skills</a></li><li><a href="../41386/research-skills-1.html">Research skills</a></li><li><a href="../41382/reflection-skills--1.html">Reflection skills </a></li></ul></li><li><a href="../41488/the-nature-of-science-1.html" class="father">The Nature of Science</a><ul class="level-2"><li><a href="../41489/key-terms-concepts--1.html">Key terms & concepts </a></li><li><a href="../41492/how-the-elements-were-named--1.html">How the elements were named </a></li><li><a href="../41490/nos-critical-thinking-1.html">NOS & Critical Thinking</a></li><li><a href="../41493/the-culture-of-chemistry--1.html">The Culture of Chemistry </a></li><li><a href="../41494/nature-of-science-questions--1.html">Nature of Science questions </a></li></ul></li><li><a href="../41401/external-assessment-exams-1.html" class="father">External assessment (Exams)</a><ul class="level-2"><li><a href="../41403/essential-facts--1.html">Essential Facts </a></li><li><a href="../41409/paper-1-multiple-choice--1.html">Paper 1 (Multiple Choice) </a></li><li><a href="../41417/paper-2--1.html">Paper 2 </a></li><li><a href="../41431/paper-3--1.html">Paper 3 </a></li></ul></li><li><a href="../41662/extended-essay--1.html" class="father">Extended Essay </a><ul class="level-2"><li><a href="../41685/preparation-1.html">Preparation</a></li><li><a href="../41686/researching--1.html">Researching </a></li><li><a href="../42075/writing-the-essay-1.html">Writing the essay</a></li><li><a href="../41687/assessment-1.html">Assessment</a></li></ul></li></ul></li></ul></nav>
</div>
</div>
</div>
<nav id="nav-menu-search" style="display: none;">
<div class="layout-wrapper">
<form class="form-inline" role="search" method="get" action="chemistry/search">
<input id="nav-search" name="s" type="search" placeholder="Search Chemistry..." value="">
<button class="btn btn-sm btn-primary" type="submit">
Search
</button>
<a href="#" class="toggle-menu-search" title="Close">
<i class="fa fa-lg fa-times gray"></i>
</a>
</form>
</div>
</nav>
<div class="layout-wrapper">
<div id="container" class="container-fluid">
<div id="content">
<div class="row-fluid">
<div id="left-column" class="span3"><div class="dropdown" id="userbox"><a class="dropdown-toggle btn" data-toggle="dropdown" onclick="return false;"><img src="../../../img/user/t/IBRR.jpg" style="width: 16px; height: 16px; margin: -2px 0 0 0;"> IB Docs (2) Team <i class="fa fa-caret-down gray"></i></a><ul class="dropdown-menu" style="min-width: 200px"><li><a href="https://www.thinkib.net/chemistry" class="" title=""><i class="fa fa-globe fixwidth colored"></i>IBDP Chemistry</a></li><li class="divider"></li><li><a href="https://www.thinkib.net/chemistry/user" class="" title="Check & modify your profile"><i class="fa fa-user fixwidth colored"></i>My profile</a></li><li><a href="https://www.thinkib.net/chemistry/sitemap" class="" title="Get an overview of the site"><i class="fa fa-sitemap colored fixwidth colored"></i>Sitemap</a></li><li><a href="chemistry/std-access" class="" title="Set up/Manage student access"><i class="fa fa-group fixwidth colored"></i>Student access</a></li><li><a href="https://www.thinkib.net/chemistry/user/teacher-accounts" class="" title="Manage teacher accounts"><i class="fa fa-cogs fixwidth colored"></i>Teacher accounts</a></li><li><a href="https://www.thinkib.net/chemistry/user/bookmarks" class="" title="Manage your bookmarked pages"><i class="fa fa-star fixwidth colored"></i>My favorites</a></li><li><a href="https://www.thinkib.net/chemistry/user/messages" class="" title="Read your messages"><i class="fa fa-envelope-o fixwidth colored"></i>Messages</a></li><li><a href="/help/thinkib" class="pop-up-help" title="Help"><i class="fa fa-info-circle fixwidth colored"></i>Help</a></li><li><a href="https://www.thinkib.net/subscribe/" class="" title="Add / Renew subjects"><i class="fa fa-refresh fixwidth colored"></i>Renew</a></li><li class="divider"></li><li><a href="chemistry?logout=1"><i class="fa fa-power-off fixwidth colored"></i>Log out</a></li></ul></div><div id="std-side-box" class="side-box shadow-md" data-pid="31516">
<div id="std-access-tools" data-pid="31516" data-general-id="3">
<div class="row-fluid accordion-group">
<div class="std-access-tools-header">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#std-access-tools" href="#std-access-tools-content" onclick="return false;">
<i class="fa fa-caret-right white"></i>
Student access tools
</a>
</div>
<div id="std-access-tools-content" class="accordion-body collapse">
<div class="accordion-inner">
<p><i class="fa fa-spin fa-circle-o-notch"></i> Loading...</p>
</div>
</div>
</div>
</div>
</div>
<nav id="sidemenu" class="side-nav"><div class="header"><span style="color: #fff;"><a href="../16284/exams-1.html">Exams</a></span><span id="sidetreecontrol"><a title="Collapse all" rel="collapse" href="#"><i class="fa fa-minus-circle"></i></a> <a title="Expand all" rel="expand" href="#"><i class="fa fa-plus-circle"></i></a></span></div><ul class="level-0 always-expanded"><li class=" parent" style="padding-left: 0px"><i class="expander fa fa-caret-right "></i><a href="../16286/essential-facts-1.html" title="Essential Facts">Essential Facts</a></li><ul class="level-1 "><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16287/objectives-command-terms-1.html" title="Objectives & command terms">Objectives & command terms</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16288/grade-descriptors-1.html" title="Grade descriptors">Grade descriptors</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16289/grade-boundaries-1.html" title="Grade boundaries">Grade boundaries</a></li></ul><li class="ancestor parent" style="padding-left: 0px"><i class="expander fa fa-caret-right fa-rotate-90"></i><a href="../16302/paper-1-multiple-choice-1.html" title="Paper 1 (Multiple Choice)">Paper 1 (Multiple Choice)</a></li><ul class="level-1 expanded"><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16303/advice-to-students-paper-1-1.html" title="Advice to students (Paper 1)">Advice to students (Paper 1)</a></li><li class="ancestor parent" style="padding-left: 14px"><i class="expander fa fa-caret-right fa-rotate-90"></i><a href="../31515/practice-paper-1-exams-1.html" title="Practice Paper 1 exams">Practice Paper 1 exams</a></li><ul class="level-2 expanded"><li class="current" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="sl-practice-paper-1-1.html" title="SL Practice Paper 1 (1)">SL Practice Paper 1 (1)</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../31677/sl-practice-paper-1-2-.html" title="SL Practice Paper 1 (2) ">SL Practice Paper 1 (2) </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../31806/sl-practice-paper-1-3-.html" title="SL Practice Paper 1 (3) ">SL Practice Paper 1 (3) </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../31518/hl-practice-paper-1-1-.html" title="HL Practice Paper 1 (1) ">HL Practice Paper 1 (1) </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../31696/hl-practice-paper-1-2-.html" title="HL Practice Paper 1 (2) ">HL Practice Paper 1 (2) </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../32111/hl-practice-paper-1-3-.html" title="HL Practice Paper 1 (3) ">HL Practice Paper 1 (3) </a></li></ul></ul><li class=" parent" style="padding-left: 0px"><i class="expander fa fa-caret-right "></i><a href="../16305/paper-2-1.html" title="Paper 2">Paper 2</a></li><ul class="level-1 "><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16306/advice-to-students-paper-2-1.html" title="Advice to students (Paper 2)">Advice to students (Paper 2)</a></li><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16307/areas-of-difficulty-1.html" title="Areas of difficulty">Areas of difficulty</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../32586/misuse-of-formulas.html" title="Misuse of formulas">Misuse of formulas</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../16309/ie-graphs.html" title="IE graph(s)">IE graph(s)</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../16311/vsepr.html" title="VSEPR">VSEPR</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../31240/understanding-and-using-g-.html" title="Understanding and using ΔG ">Understanding and using Δ<em>G </em></a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../32566/manipulating-equilibrium-constants-.html" title="Manipulating equilibrium constants ">Manipulating equilibrium constants </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../31229/understanding-the-activity-series.html" title="Understanding the activity series">Understanding the activity series</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../16310/using-electrode-potentials.html" title="Using electrode potentials">Using electrode potentials</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../16308/curly-arrows.html" title="'Curly arrows'">'Curly arrows'</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../33687/understanding-hybridization.html" title="Understanding hybridization">Understanding hybridization</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../32529/factors-affecting-the-rate-of-nucleophilic-substitution-reaction.html" title="Factors affecting the rate of nucleophilic substitution reactions">Factors affecting the rate of nucleophilic substitution reactions</a></li></ul></ul><li class=" parent" style="padding-left: 0px"><i class="expander fa fa-caret-right "></i><a href="../16313/paper-3--1.html" title="Paper 3 ">Paper 3 </a></li><ul class="level-1 "><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16314/advice-to-students-paper-3-1.html" title="Advice to students (Paper 3)">Advice to students (Paper 3)</a></li><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16342/data-response-questions-1.html" title="Data response questions">Data response questions</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../16339/data-response-example-1.html" title="Data response Example 1">Data response Example 1</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../16340/data-response-example-2.html" title="Data response Example 2">Data response Example 2</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../16341/data-response-example-3.html" title="Data response Example 3">Data response Example 3</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../17292/data-response-example-4.html" title="Data response Example 4">Data response Example 4</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20333/data-response-example-5.html" title="Data response Example 5">Data response Example 5</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20334/data-response-example-6-.html" title="Data response Example 6 ">Data response Example 6 </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20367/data-response-example-7-.html" title="Data response Example 7 ">Data response Example 7 </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20381/data-response-example-8-.html" title="Data response Example 8 ">Data response Example 8 </a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20461/data-response-example-9-.html" title="Data response Example 9 ">Data response Example 9 </a></li></ul><li class=" parent" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../20054/experimental-work-questions-1.html" title="Experimental work questions">Experimental work questions</a></li><ul class="level-2 "><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20033/experimental-work-question-1.html" title="Experimental work Question 1">Experimental work Question 1</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20034/experimental-work-question-2.html" title="Experimental work Question 2">Experimental work Question 2</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20042/experimental-work-question-3.html" title="Experimental work Question 3">Experimental work Question 3</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20065/experimental-work-question-4.html" title="Experimental work Question 4">Experimental work Question 4</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20073/experimental-work-question-5.html" title="Experimental work Question 5">Experimental work Question 5</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20070/experimental-work-question-6.html" title="Experimental work Question 6">Experimental work Question 6</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20076/experimental-work-question-7.html" title="Experimental work Question 7">Experimental work Question 7</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20064/experimental-work-question-8.html" title="Experimental work Question 8">Experimental work Question 8</a></li><li class="" style="padding-left: 28px"><i class="expander fa fa-caret-right "></i><a href="../20056/experimental-work-question-9.html" title="Experimental work Question 9">Experimental work Question 9</a></li></ul></ul><li class=" parent" style="padding-left: 0px"><i class="expander fa fa-caret-right "></i><a href="../16324/the-examination-process-1.html" title="The examination process">The examination process</a></li><ul class="level-1 "><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16316/setting-the-exam-papers-1.html" title="Setting the exam papers">Setting the exam papers</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16317/predicted-grades-1.html" title="Predicted grades">Predicted grades</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16318/marking-the-papers-1.html" title="Marking the papers">Marking the papers</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16319/commenting-on-the-exams-1.html" title="Commenting on the exams">Commenting on the exams</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16320/grade-awarding-1.html" title="Grade Awarding">Grade Awarding</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16321/enquiry-upon-results-1.html" title="Enquiry upon results">Enquiry upon results</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16322/chief-examiners-report-1.html" title="Chief Examiner's report">Chief Examiner's report</a></li><li class="" style="padding-left: 14px"><i class="expander fa fa-caret-right "></i><a href="../16323/retaking-the-exam-1.html" title="Retaking the exam">Retaking the exam</a></li></ul><li class="" style="padding-left: 0px"><i class="expander fa fa-caret-right "></i><a href="../16325/faqs-1.html" title="FAQs">FAQs</a></li></ul></nav></div><!-- /#left-column-->
<div id="main-column" class="span9"><article id="main-article"><a id="exit-fs" title="Exit presentation mode" href="#" onclick="return false;"><i class="fa fa-arrows-alt"></i></a><ul class="page-actions no-print stacked nav nav-list visible-desktop"><li><a class="presentation" href="#" onclick="return false;"><i class="fa fa-desktop"></i><span>Presentation mode</span></a></li><li><a class="print-section-blog" href="#" onclick="return false;"><i class="fa fa-print"></i><span>Print this page</span></a></li><li><a class="page-bookmarker stacked" data-ticket="IB Docs (2) Team" data-pid="31516" href="#" onclick="return false;"><i class="fa fa-star"></i><span>Favourite</span></a><textarea data-ticket="IB Docs (2) Team" data-pid="31516" id="editor" class="favcomms hidden" placeholder="Your personal notes..."></textarea></li><li><a class="personal-notes" href="#" onclick="return false;"><i class="fa fa-file-text"></i><span>Personal notes</span></a></li><li><a class="" data-toggle="modal" href="#modal-feedback" onclick="return false;"><i class="fa fa-envelope-o"></i><span>Feedback</span></a></li><li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" data-target="#" href="#"><i class="fa fa-share-alt"></i><span>Share this page</span></a><ul class="dropdown-menu" role="menu"><li><a class="" target="_blank" title="Share on Twitter" href="https://twitter.com/share?text=%22SL+Practice+Paper+1+%281%29%22+-+via+%40InThinker+%23chemistry%0A&url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-twitter-square"></i><span>Twitter</span></a></li><li><a class="" target="_blank" title="Share on Facebook" href="https://www.facebook.com/sharer.php?u=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1&t=SL+Practice+Paper+1+(1)"><i class="fa fa-facebook-square"></i><span>Facebook</span></a></li><li><a class="" href="http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-linkedin-square"></i><span>LinkedIn</span></a></li><li><a class="" href="https://plus.google.com/share?url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-google-plus-square"></i><span>Google +</span></a></li><li><a class="" href="mailto:?subject=SL Practice Paper 1 (1)&body=To give your students access to this page you will need to change the access from " filtered="" student="" access"="" to="" "direct="" student="" access".="" %0ahttps%3a%2f%2fwww.thinkib.net%2fchemistry%2fpage%2f31516%2fsl-practice-paper-1-1"=""><i class="fa fa-envelope"></i><span>Email</span></a></li></ul></li><li><a class="" href="chemistry/teaching-materials"><i class="fa fa-puzzle-piece colored"></i><span>Teaching materials</span></a></li></ul><div class="page-actions no-print navbar inline hidden-desktop"><div class="navbar-inner"><ul class="nav"><li><a class="presentation" href="#" onclick="return false;"><i class="fa fa-desktop"></i></a></li><li><a class="print-section-blog" href="#" onclick="return false;"><i class="fa fa-print"></i></a></li><li><a class="page-bookmarker" data-ticket="IB Docs (2) Team" data-pid="31516" href="#" onclick="return false;"><i class="fa fa-star"></i></a></li><li><a class="personal-notes" href="#" onclick="return false;"><i class="fa fa-file-text"></i></a></li><li><a class="" data-toggle="modal" href="#modal-feedback" onclick="return false;"><i class="fa fa-envelope-o"></i></a></li><li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" data-target="#" href="#"><i class="fa fa-share-alt"></i></a><ul class="dropdown-menu" role="menu"><li><a class="" target="_blank" title="Share on Twitter" href="https://twitter.com/share?text=%22SL+Practice+Paper+1+%281%29%22+-+via+%40InThinker+%23chemistry%0A&url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-twitter-square"></i><span>Twitter</span></a></li><li><a class="" target="_blank" title="Share on Facebook" href="https://www.facebook.com/sharer.php?u=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1&t=SL+Practice+Paper+1+(1)"><i class="fa fa-facebook-square"></i><span>Facebook</span></a></li><li><a class="" href="http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-linkedin-square"></i><span>LinkedIn</span></a></li><li><a class="" href="https://plus.google.com/share?url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-google-plus-square"></i><span>Google +</span></a></li><li><a class="" href="mailto:?subject=SL Practice Paper 1 (1)&body=To give your students access to this page you will need to change the access from " filtered="" student="" access"="" to="" "direct="" student="" access".="" %0ahttps%3a%2f%2fwww.thinkib.net%2fchemistry%2fpage%2f31516%2fsl-practice-paper-1-1"=""><i class="fa fa-envelope"></i><span>Email</span></a></li></ul></li><li><a class="" href="chemistry/teaching-materials"><i class="fa fa-puzzle-piece colored"></i></a></li></ul></div></div><h1 class="section-title">SL Practice Paper 1 (1)</h1><ul class="breadcrumb"><li><a title="Home" href="https://www.thinkib.net/chemistry"><i class="fa fa-home"></i></a><span class="divider"><i class="fa fa-chevron-right"></i></span></li><li><a title="Go to: Exams" href="../16284/exams-1.html">Exams</a><span class="divider"><i class="fa fa-chevron-right"></i></span></li><li><a title="Go to: Paper 1 (Multiple Choice)" href="../16302/paper-1-multiple-choice-1.html">Paper 1 (Multiple Choice)</a><span class="divider"><i class="fa fa-chevron-right"></i></span></li><li><a title="Go to: Practice Paper 1 exams" href="../31515/practice-paper-1-exams-1.html">Practice Paper 1 exams</a><span class="divider"><i class="fa fa-chevron-right"></i></span></li><li><span>SL Practice Paper 1 (1)</span></li></ul><div id="std-sidebox-task-added-msg"></div><div id="modal-feedback" class="modal hide fade text-left" tabindex="-1" role="dialog" aria-labelledby="log-in form" aria-hidden="true">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h3>SL Practice Paper 1 (1): Feedback</h3>
</div>
<div class="modal-body">
<form method="post" id="feedback-form">
<div class="row-fluid">
<div class="span12" style="margin: 12px 0">
<p>
Which of the following best describes your feedback?
</p>
<label class="radio" style="float: left; margin-right: 12px">
<input type="radio" checked="checked" value="useful" name="feedback-type">
Recommend
</label><label class="radio" style="float: left; margin-right: 12px">
<input type="radio" value="error" name="feedback-type">
Report a problem
</label><label class="radio" style="float: left; margin-right: 12px">
<input type="radio" value="improve" name="feedback-type">
Suggest an improvement
</label><label class="radio" style="float: left; margin-right: 12px">
<input type="radio" value="other" name="feedback-type">
Other
</label>
</div>
</div>
<div class="row-fluid">
<label>Comments:</label>
<div class="row-fluid">
<textarea class="span12" name="feedback-comment" placeholder="Your feedback... (optional)"></textarea>
</div>
</div>
<input type="hidden" name="feedback-submited" value="1">
</form>
</div>
<div class="modal-footer">
<button class="btn btn-large" type="button" data-dismiss="modal" aria-hidden="true">
<i class="fa fa-remove"></i>
Cancel
</button>
<button class="btn pull-right" id="submit-feedback" onclick="javascript:$('#feedback-form').submit();return false;">
<i class="fa fa-check"></i>
Submit
</button>
</div>
</div><section id="main-content"><h1><img alt="" class="noborder" src="../../../ib/chemistry/images/Exams/Taking%20exams.jpg" style="width: 1px; height: 1px;"><img alt="" height="21" src="../../../img/tib-icons/standard-level-32-1.png" title="" width="21"> 'Mock' Paper 1 multiple choice exam (1)</h1><section class="tib-teacher-only" readonly="true" title="This box is not visible to students"><div class="header" readonly="true"><img class="icon" src="../../../img/icons/teacher-only.svg"> Teacher only box</div><div class="content" readonly="false"><p>To give your students access to this page you will need to change the access from "Filtered student access" to "Direct student access".</p></div></section><hr class="hidden"><div class="greenBg"><h2>Instructions</h2><ul><li>Time allowed: 45 minutes</li><li>Answer all the questions.</li><li>For each question choose the answer you consider to be the best.</li><li>Use the periodic table from Section 6 of the data booklet as your <strong>only</strong> source of reference.</li><li>Do not use a calculator</li><li>If you are not a native speaker of English a simple translating dictionary is allowed.</li><li>At the end of 45 minutes tick the green check box at the bottom of the page. <img alt="" class="noborder" src="../../../ib/chemistry/images/2014%20Exams/screenshot-2019-11-05-at-22.23.28.png" style="width: 153px; height: 26px;"></li><li>Learn from any mistakes you have made.<hr class="hidden"></li></ul></div><div class="tib-quiz" data-quiz-id="777" data-structure="6d637a4a51615a4c42544931526d787a324e6c68327a65696d4a727a617a536e702b5153637758353049466b303236772b48706c774b69304966346f726e55733361777338307a796646316168456b61336750434f62636872557a475a5a416f43356b6c3773516f713951334a326a4c5a61554d555470336d4866585a687742466d694364696f6b34554e466d6370574a70694b7767795a4b4c55704e3843476f504d684a47494577544e3132333252784a634a4157626a6f7177496e77374f62667434463744356d584b3468335175706d6c4a504d334958667645654f33496559667a67482f773372592b4e2f536b726d3650554c564f4e7376684b626546734e787246457a34667a64614376734a706f74306771506d786473782b37695952505663764f704a38544139696c536b2b473161774b42587362765a6a4f57455a784256524d7178583979736d4f312f32417a4977553471557076374c2b582b2f643571557972346153545936766444396d364b75774d3852516d6848492f414a507779614d7269695073795432636c64574e43595a5141505a56477a6b59614b4178757562774f4145426e344667737a42414d48305950374a54495531594e72526457346d64574b59786655587a316f7265416c4952686d75592f656f50512f6e4c32524b31453541466e303633613262714d5675496637326f4630345a3376574b34792b786e2f3144326e6d3161764b306d6d74737a317a527a336b6671746f7138436e6e5767716a3373712f456a614a47654b5253445049676a686330426b5578696131676449416e4f79695075663764686c4b335248552b622f6a622f2f4453433659323369696c2b624b6f336f6f49436863435a617465633039493270634d58684a42593936544550497a494a6e3359427277647a613142796c4b6b7478774b7452633764575341534b5937494b72614c4d75506964324e396c5334696d55357942615471686a7875705655702f423973755347755735512f61797a7a35624a32766d78534e49776932634c4264465451784c42583531574b4f4e466d4e5953734f7a543976734a7672584f756a562b614c526e2f54716b7a486f3977662b5a6d677545627a63362b734469344b6d507a484345734a4a6d776661354e674468342b67414a715754616c634351356877356d434f572f685a41794b45665a4a4335384c36794241574332746a5a326e686e7a6b7738584c4e4f5859644f436a794f6a7455596246394d3347424e2f34735649694775677653504866616d6c53365549327435386f5a6752434b422f444e4b6f414948366f44396177503565464930534a2f5174446965446c525957653568352f42614e5434314452514136714664426c5a4d4836744946563761445a656875373654626d7562334a4f7a67594e6746776a7237776f61535078412b37393545687238484b676d534e7355594d466e2f706d48705356744f416b47716a55733562694d38356773446e785877732b2b486d594244314a316f4c76634b52585631326735724f79544e554c57706c38463350482b47467542764f4b554b4771784f6c586172337237367a7a587970744972716a4d744842477767304735697161663732312b576f77366931556c6170704b367a434c62393776596d4b4e6f54422f75562b3973546e48577750444943335734353233486d3871475075385962306a5542454a427149584944356a67382f35633575775a46704d693337686a326450714f2f35476e714a6b65734f2b716b6a4a59394749614369762f2f595131346c716636774737596631747a5768496b77426434354c756d6c65323954714a66575561677355725936475966353538795a416275484142582f717542664b756b4731586e72716c55582f624c676355623062562b7a334a564654494c4271536a3637666a41304558384369664a744744526854793163316a447966537536632b57746e686a3759574e4a366873714954394d39456775335844495a6a2b37763944564c59574e2b723743596c336e5267374c64366f48535669566e7979544b2f56545a7850444a4b4c4b674436313553664b6468615844385036624c376d467a47413434627961414c5a57457668497468564a6d57336c653864516a75553245643450312f39576b4632783067717637503733746f586f6c623458334369495a6a346c6949784e695361696a3578634e7659506d2f4f46514e4466314a4c6b764c59466a4b415161746a46623734713578556e4965506b2f766248793642625467706c5348656a7a6665622f557654714a6f4c4e44594e496e6551676558652f70736565682b5275616f63716d54577a56354f762f666a706a396e752f47387a7a50684e493945737158732f562f4e3579763637342b436b725962714c6f73514a6a64476873435351656a4a594c684f6475685949515a6a3158614d676e2b6a6e6a4f4a6649536c47784164395679714c427641686558786f6767695462355337303571484447526542763854326973396e515a4b467853684e682f42384d4b6b326d63376859366b734d6256312b642b7a796f454a546655477a4f4e4e47766e4a6e57317048416a4e5450385654714734656172776756472b692f337039396a67314a6c2b7353514651524a5656362b726e68765178634d2b724247704c63446363786c39437550427566644b4e59634f65736d66736d464b65596e61517930517372573156762f377179676f4952686d65716f474c346c467532366b757678516157504a48355061614d71614f492b326a685652444479474c662f31594e475a59335159513459373172636a2b4d5951686835354f4e49526b375150586430554a4a6e4f2b3563547772354558624b727657665336553879513766514f55374278565030676e4f6c4457413364343775757a41736e4b447977366946524a6843544834526d6e595878564a414d71394730384e335264424334794c347756397472322f7375446d57447738716a457849496e524b36326a797a6b3033344f3073764c362f592f526d5867685271356a3549725a31354947476836416a6a494846546f713948474f766d564d657a6d36756863794e426f6e5a5a476a6e465638434539656b4343465330523951716d4b4d386a7765305330546c43565947706133427944434251527a4462547545426d6e5476544c3242565a4a42764178775a3673454f73377666456a7674715638576c3374474a466c7477305a736d656871357254335343676b7250675439784234727a59765a6149494e3361742b2b78473248624c6b333558624b61496979734e6c4d44516f4a6d4b736e574e3069492b702b61555050616c714275654270436c4e364f7155424954525a39487144464769517952796c325059785346356f7a67422f463573356e4f3765682f30554a41654757656f68384b4c" data-score-answers="6d4a526a457a48584f763758344a7649472f76324c53614b78524c393439595570496d5a5971374b38686f3d"><div class="exercise"><div class="q-question"><p>What is the relative atomic mass of silicon?</p></div><div class="q-answer"><p><label class="radio" data-answer="3c848836459475b78f2066f1a625cbf1"><input type="radio"><span> 28.09 </span></label></p><p><label class="radio" data-answer="665c0b6925e0d5ab8c34db2a1bba39f6"><input type="radio"><span> 28.09 kg</span></label></p><p><label class="radio" data-answer="a3cbe3f2fef41d363104a7d0791064b0"><input type="radio"><span> 28.09 g</span></label></p><p><label class="radio" data-answer="027b52f09c0eb622ad17cfa916fdc224"><input type="radio"><span> 28.09 g mol<sup>−1</sup></span></label></p></div><div class="q-explanation"><p>The relative atomic mass is the weighted average mass of all the isotopes occurring naturally in one mole of atoms of the element compared to the mass of 1/12 mol of carbon-12 so has no units.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>What is the sum of the integer coefficients when ammonia is oxidized in air in the presence of a catalyst to produce nitrogen(II) oxide and water?</p><p style="margin-left: 40px;">_ NH<sub>3</sub>(g) + ­_ O<sub>2</sub>(g) → _ NO(g) + _ H<sub>2</sub>O(l)</p></div><div class="q-answer"><p><label class="radio" data-answer="6512bd43d9caa6e02c990b0a82652dca"><input type="radio"><span> 11</span></label></p><p><label class="radio" data-answer="37693cfc748049e45d87b8c7d8b9aacd"><input type="radio"><span> 23</span></label></p><p><label class="radio" data-answer="1f0e3dad99908345f7439f8ffabdffc4"><input type="radio"><span> 19</span></label></p><p><label class="radio" data-answer="d3d9446802a44259755d38e6d163e820"><input type="radio"><span> 10</span></label></p></div><div class="q-explanation"><p>The balanced equation is 4NH<sub>3</sub>(g) + ­5O<sub>2</sub>(g) → 4NO(g) + 6H<sub>2</sub>O(l)</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>What will be the concentration (in mol dm<sup>−3</sup>) of hydrochloric acid in the solution formed by adding 150 cm<sup>3</sup> of 0.20 mol dm<sup>−3</sup> HCl(aq) to 250 cm<sup>3</sup> of 0.30 mol dm<sup>−3</sup> HCl(aq)? </p></div><div class="q-answer"><p><label class="radio" data-answer="5d6182b8169f820c3e247e91131138ea"><input type="radio"><span> 0.24</span></label></p><p><label class="radio" data-answer="246c0903b5a64b2a854ec1e7865f174f"><input type="radio"><span> 0.29</span></label></p><p><label class="radio" data-answer="261943f3a93b683ceeac658927f3923f"><input type="radio"><span> 0.26</span></label></p><p><label class="radio" data-answer="94e0b7097bece407207267f7787e3012"><input type="radio"><span> 0.22</span></label></p></div><div class="q-explanation"><p>Amount of HCl in 150 cm<sup>3</sup> of 0.20 mol dm<sup>−3</sup> HCl(aq) = 150/1000 x 0.20 mol<br>Amount of HCl in 250 cm<sup>3</sup> of 0.30 mol dm<sup>−3</sup> HCl(aq) = 250/1000 x 0.30 mol<br>Amount of HCl in 400 cm<sup>3</sup> of mixture = (150/1000 x 0.20) + (250/1000 x 0.30) mol<br>Amount of HCl in 1000 cm<sup>3</sup> (1 dm<sup>3</sup>) of mixture = [(150/1000 x 0.20) + (250/1000 x 0.30)] x 1000/400 = 0.26 mol</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>What volume of gas, measured at STP, will be remaining when 1.60 g of methane is combusted completely in 12.80 g of oxygen gas? (1 mol of an ideal gas occupies 22.7 dm<sup>3</sup> at STP).</p></div><div class="q-answer"><p><label class="radio" data-answer="79f489dbcd36384ebc07f7de5dc6248f"><input type="radio"><span> 11.4 dm<sup>3</sup></span></label></p><p><label class="radio" data-answer="cdcf95bf88ef75ca089a50f63735f337"><input type="radio"><span> 6.81 dm<sup>3</sup></span></label></p><p><label class="radio" data-answer="542e236e676bc3c7ba096f8137ffb621"><input type="radio"><span> 0 dm<sup>3</sup></span></label></p><p><label class="radio" data-answer="e318094a40a899777c1471dc1cd9fc4f"><input type="radio"><span> 2.27 dm<sup>3</sup></span></label></p></div><div class="q-explanation"><p>CH<sub>4</sub>(g) + 2O<sub>2</sub>(g) → CO<sub>2</sub>(g) + 2H<sub>2</sub>O(l) so 1.60 g (0.1 mol) of methane requires 0.2 mol of oxygen (6.40 g) to combust completely. This means there will be 6.40 g (0.2 mol) of excess oxygen remaining and 0.1 mol of carbon dioxide product present (water is a liquid at STP) which will occupy 3 x 2.27 = 6.81 dm<sup>3</sup>.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is correct for <img align="middle" alt="begin mathsize 10px style table row 56 row 26 end table end style" class="Wirisformula" data-mathml="«math style=¨font-family:Arial¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨10px¨»«mtable»«mtr»«mtd»«mn»56«/mn»«/mtd»«/mtr»«mtr»«mtd»«mn»26«/mn»«/mtd»«/mtr»«/mtable»«/mstyle»«/math»" src="../../../ckeditor/plugins/wiris/integration/showimage-61.php?formula=94b1d9cf2245ca08b148d8009ef313e8.png">Fe<sup>3+</sup>? </p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/screenshot-2019-10-31-at-10.38.25.png" style="width: 400px; height: 155px;"></p></div><div class="q-answer"><p><label class="radio" data-answer="7fc56270e7a70fa81a5935b72eacbe29"><input type="radio"><span> A</span></label></p><p><label class="radio" data-answer="9d5ed678fe57bcca610140957afab571"><input type="radio"><span> B</span></label></p><p><label class="radio" data-answer="0d61f8370cad1d412f80b84d143e1257"><input type="radio"><span> C</span></label></p><p><label class="radio" data-answer="f623e75af30e62bbd73d6df5b50bb7b5"><input type="radio"><span> D</span></label></p></div><div class="q-explanation"><p>The atomic number of Fe is 26 so it will contain 26 protons. Its mass number is 56 so there will be 30 neutrons in the isotope. Fe contains 26 electrons. Three electrons have been removed to form Fe<sup>3+</sup> so there will be 23 electrons remaining.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which transition in the hydrogen spectrum emits the highest energy?</p></div><div class="q-answer"><p><label class="radio" data-answer="72c8ba9262a5142f1db31015e6886f3c"><input type="radio"><span> <em>n</em> = 4 to <em>n</em> = 2</span></label></p><p><label class="radio" data-answer="4c56d302e2284de82509467262cffa8d"><input type="radio"><span> <em>n</em> = 2 to <em>n</em> = 4</span></label></p><p><label class="radio" data-answer="6e9593394b2a9fd6a64fba824710e5a1"><input type="radio"><span> <em>n</em> = 2 to <em>n</em> = 1</span></label></p><p><label class="radio" data-answer="6a7aa15bea80d64279ca656f500e2c4b"><input type="radio"><span> <em>n</em> = 1 to <em>n</em> = 2</span></label></p></div><div class="q-explanation"><p>Emission spectra involve excited electrons falling from higher to lower energy levels. Electrons falling to the <em>n</em> = 1 level will have the highest energy as all these transitions occur in the ultraviolet region of the electromagnetic spectrum (when electrons fall to the <em>n</em> = 2 level the transitions occur in the visible region).</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which group in the periodic table contains the element with the electron configuration 1s<sup>2</sup>2s<sup>2</sup>2p<sup>6</sup>3s<sup>2</sup>3p<sup>5</sup>? </p></div><div class="q-answer"><p><label class="radio" data-answer="70efdf2ec9b086079795c442636b55fb"><input type="radio"><span> 17</span></label></p><p><label class="radio" data-answer="9bf31c7ff062936a96d3c8bd1f8f2ff3"><input type="radio"><span> 15</span></label></p><p><label class="radio" data-answer="8f14e45fceea167a5a36dedd4bea2543"><input type="radio"><span> 7</span></label></p><p><label class="radio" data-answer="e4da3b7fbbce2345d7772b0674a318d5"><input type="radio"><span> 5</span></label></p></div><div class="q-explanation"><p>The element has 5 electrons in its incomplete 3p sub-level so is a p block element and will be in group 17. (You can also arrive at the answer by seeing that it has 17 electrons in total so the atomic number must be 17. This means the element is chlorine which is in group 17.)</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is a correct description of the oxides of period 3? </p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/table-of-oxides-of-period-3.png" style="width: 400px; height: 149px;"></p></div><div class="q-answer"><p><label class="radio" data-answer="7fc56270e7a70fa81a5935b72eacbe29"><input type="radio"><span> A</span></label></p><p><label class="radio" data-answer="9d5ed678fe57bcca610140957afab571"><input type="radio"><span> B</span></label></p><p><label class="radio" data-answer="0d61f8370cad1d412f80b84d143e1257"><input type="radio"><span> C</span></label></p><p><label class="radio" data-answer="f623e75af30e62bbd73d6df5b50bb7b5"><input type="radio"><span> D</span></label></p></div><div class="q-explanation"><p>The oxides of period 3 (Na → Cl) change from basic to acidic moving from left to right across the period with aluminium oxide having both basic and acidic properties.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which compound contains only ionic bonding? </p></div><div class="q-answer"><p><label class="radio" data-answer="57a78cb883afa7bca304ad6dc90ace10"><input type="radio"><span> lithium sulfate</span></label></p><p><label class="radio" data-answer="c434e31ed05115d85c3f7315fb5f7833"><input type="radio"><span> potassium nitride</span></label></p><p><label class="radio" data-answer="17ab7640ce5dbcb2ff8d08c65cc205aa"><input type="radio"><span> sodium nitrate</span></label></p><p><label class="radio" data-answer="be00898f75130ade5c6e7a7e72d506a7"><input type="radio"><span> ammonium chloride</span></label></p></div><div class="q-explanation"><p>All four compounds are ionic but the nitrate, sulfate and ammonium ions, (NO<sub>3</sub><sup>−</sup>, SO<sub>4</sub><sup>2−</sup> and NH<sub>4</sub><sup>+</sup>) are complex ions which also contain covalent bonding. Potassium nitride, K<sub>3</sub>N only contains K<sup>+</sup> and N<sup>3−</sup> ions.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which compound contains a bond angle greater than 109.5<sup>o</sup>?</p></div><div class="q-answer"><p><label class="radio" data-answer="06d44c6dcc0e20d2e50e2bb9d22dec8a"><input type="radio"><span> tetrachloromethane, CCl<sub>4</sub></span></label></p><p><label class="radio" data-answer="97274c6cd502bd438497b5fb8e2dea3d"><input type="radio"><span> water, H<sub>2</sub>O</span></label></p><p><label class="radio" data-answer="8d829feae05bff3ed4489eab6ce72593"><input type="radio"><span> ammonia, NH<sub>3</sub></span></label></p><p><label class="radio" data-answer="708a5eeef5fabd238b0f133af9deaac3"><input type="radio"><span> boron trifluoride, BF<sub>3</sub></span></label></p></div><div class="q-explanation"><p>CCl<sub>4</sub>, NH<sub>3</sub> and H<sub>2</sub>O all have four electron domains around the central atom. CCl<sub>4</sub> has four bonding pairs of electrons so has a regular tetrahedral shape with bond angles of 109.5<sup>o</sup>. NH<sub>3</sub> has one non-bonding pair of electrons and H<sub>2</sub>O has two non-bonding pairs of electrons. These non-bonding pairs exert a greater repulsion than bonding pairs so the bond angles are less than 109.5<sup>o</sup>. BF<sub>3</sub> has three electron domains consisting of three bonding pairs of electrons so its shape is trigonal planar with bond angles of 120<sup>o</sup>.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is the correct order of increasing boiling points? </p></div><div class="q-answer"><p><label class="radio" data-answer="8cad7f8c01286b44104d6f20d8c98612"><input type="radio"><span> ethanoic acid < ethanal < ethanol</span></label></p><p><label class="radio" data-answer="05fbe0da22453b36c2b4f10d408ad84e"><input type="radio"><span> ethanol < ethanal < ethanoic acid</span></label></p><p><label class="radio" data-answer="b0d76fb715e65b23af1e11a99fb69ec2"><input type="radio"><span> ethanoic acid < ethanol < ethanal</span></label></p><p><label class="radio" data-answer="59d41d458f05f6b901a75b92f68c0e74"><input type="radio"><span> ethanal < ethanol < ethanoic acid</span></label></p></div><div class="q-explanation"><p>There is no hydrogen bonding between ethanal, CH<sub>3</sub>CHO molecules so ethanal has the lowest boiling point (20.2 <sup>o</sup>C). Both ethanol and ethanoic acid have a hydrogen atom bonded directly to an electronegative oxygen atom so exhibit hydrogen bonding. The hydrogen bonding will be stronger in the carboxylic acid as the oxygen atom of the carbonyl group also draws electrons away from carbon atom bonded to the -OH group so that the polarity of the O-H bond increases. (Ethanol boils at 78.4 <sup>o.</sup>C and the boiling point of ethanoic acid is 118.1 <sup>o</sup>C.)</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which factor significantly increases the strength of metallic bonding?</p></div><div class="q-answer"><p><label class="radio" data-answer="3884dd83c7030daf673f603aa05ef502"><input type="radio"><span> increase in the number of neutrons in the metal ion</span></label></p><p><label class="radio" data-answer="268e8e1b3e4419c01650bb231624e10f"><input type="radio"><span> increase in the number of electrons in the metal ion</span></label></p><p><label class="radio" data-answer="16114e340b0ee2e06b655fef7907e5b9"><input type="radio"><span> decrease in the charge on the metal ion </span></label></p><p><label class="radio" data-answer="056d9c94c9c2f8de1e5c5558733bfdf6"><input type="radio"><span> decrease in the radius of the metal ion</span></label></p></div><div class="q-explanation"><p>The three factors which increase the strength of metallic bonding are a decrease in the radius of the metal ion, an increase in the charge on the metal ion (these two factors increase the charge density) and the number of delocalized electrons. An increase in the number of electrons is not the same as an increase in the number of delocalized electrons. Potassium, for example, has 39 electrons whereas lithium only has 3 electrons but both have only one electron in the outer s orbital that can delocalize and the much smaller lithium ion means lithium has a much higher boiling point than potassium. </p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Consider the following enthalpy values:</p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/combustion-values.png" style="width: 400px; height: 42px;"></p><p>Which expression gives the enthalpy value, in kJ mol<sup>−1</sup>, for the formation of propane, C<sub>3</sub>H<sub>8</sub>(g)? </p></div><div class="q-answer"><p><label class="radio" data-answer="23685e922536b70ad8f5023ef4e8734b"><input type="radio"><span> − 394 − 286 + 2219</span></label></p><p><label class="radio" data-answer="5696b1d5b08b7d40f52526ccc210d6c3"><input type="radio"><span> 3(−394) + 4(− 286) + 2219</span></label></p><p><label class="radio" data-answer="877c33a0bdfb80120b8e8b93e19bd15f"><input type="radio"><span> − 394 − 286 − 2219</span></label></p><p><label class="radio" data-answer="ea0f56a3be89ac18a16b15237ea38b92"><input type="radio"><span> 3(– 394) + 4(− 286) – 2219</span></label></p></div><div class="q-explanation"><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/hess-s-law-for-propane-formation.png" style="width: 250px; height: 154px;"></p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is the correct order of increasing bond strength between oxygen atoms in a molecule of the compound? </p></div><div class="q-answer"><p><label class="radio" data-answer="2890baa9ecdb6e86bcb53b357862e84b"><input type="radio"><span> ozone < oxygen gas < hydrogen peroxide</span></label></p><p><label class="radio" data-answer="9bc68b0e782f7de0d8b45098e0d525e9"><input type="radio"><span> hydrogen peroxide < ozone < oxygen gas</span></label></p><p><label class="radio" data-answer="4dfdbb250ad7ba29438ba84ad4a52346"><input type="radio"><span> oxygen gas < hydrogen peroxide < ozone</span></label></p><p><label class="radio" data-answer="bc0f4901a217f853c15a8ea31df5e157"><input type="radio"><span> ozone < hydrogen peroxide < oxygen gas</span></label></p></div><div class="q-explanation"><p>The O−O bond in hydrogen peroxide, H<sub>2</sub>O<sub>2</sub> is a single bond so is the weakest. The O=O bond in oxygen gas is the strongest as it is a double bond and the oxygen to oxygen bond in ozone is in-between as it is a resonance hybrid equivalent to a 1.5 bond.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which enthalpy value at SATP conditions can be determined using only average bond enthalpies? </p></div><div class="q-answer"><p><label class="radio" data-answer="1e3989853c3e568f480e6b0501761084"><input type="radio"><span> The reaction between hydrogen and iodine to produce hydrogen iodide.</span></label></p><p><label class="radio" data-answer="3a509d38803548d9b91179bb47e9aa6d"><input type="radio"><span> The reaction between oct-1-ene and hydrogen to produce octane.</span></label></p><p><label class="radio" data-answer="46255e7ef34f2b09ced50e9f8aa5697f"><input type="radio"><span> The reaction between methane and chlorine to produce chloromethane and hydrogen chloride.</span></label></p><p><label class="radio" data-answer="ad61f461613cc5aae9097c832afc14e7"><input type="radio"><span> The reaction between ethene and water to produce ethanol.</span></label></p></div><div class="q-explanation"><p>Average bond enthalpies refer only to the gaseous state and additional enthalpy terms involving change of state are required for all the reactions except for the reaction between methane and chlorine where all the reactants and products are in the gaseous state.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is a correct unit for the rate of a chemical reaction? </p></div><div class="q-answer"><p><label class="radio" data-answer="dcb8eec26dd1db8bd982e3685c6ded07"><input type="radio"><span> mol dm<sup>−3</sup> s<sup>−1</sup></span></label></p><p><label class="radio" data-answer="36079ed8b7daf11e992d8613db9684ed"><input type="radio"><span> mol dm<sup>−3</sup> </span></label></p><p><label class="radio" data-answer="d7ceaa60f30f0f87a6824ef4b9d3b849"><input type="radio"><span> s<sup>−1</sup></span></label></p><p><label class="radio" data-answer="e08b4eb5eee42c0089cd2cd8e12c1811"><input type="radio"><span> mol s<sup>−1</sup></span></label></p></div><div class="q-explanation"><p>Rate of reaction is measured as the change in concentration over time so will have the units of concentration time<sup>−1</sup>.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>The graph shows the reaction pathway for an endothermic reaction with and without a catalyst.</p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/activation-energy-profile.png" style="width: 300px; height: 204px;"></p><p>Which gives the correct quantitative values? </p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/values-for-ea-etc.png" style="width: 400px; height: 138px;"></p></div><div class="q-answer"><p><label class="radio" data-answer="7fc56270e7a70fa81a5935b72eacbe29"><input type="radio"><span> A</span></label></p><p><label class="radio" data-answer="9d5ed678fe57bcca610140957afab571"><input type="radio"><span> B</span></label></p><p><label class="radio" data-answer="0d61f8370cad1d412f80b84d143e1257"><input type="radio"><span> C</span></label></p><p><label class="radio" data-answer="f623e75af30e62bbd73d6df5b50bb7b5"><input type="radio"><span> D</span></label></p></div><div class="q-explanation"><p><em>E</em><sub>a</sub> for the forward catalysed reaction is the difference between the starting energy and the peak of the dotted red line (catalysed pathway), Δ<em>H</em> is the difference in energy between the initial and final states and <em>E</em><sub>a</sub> for the reverse catalysed reaction is the difference between the new starting energy and the peak of the catalysed pathway.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>The value of the equilibrium constant for the reaction between hydrogen and iodine to form hydrogen iodide at 500 K is 1.60 x 10<sup>2</sup>.</p><p style="margin-left: 40px;">H<sub>2</sub>(g) + I<sub>2</sub>(g) ⇌ 2HI(g) <em>K</em><sub>c</sub> = 1.60 x 10<sup>2</sup></p><p>What will be the value of the equilibrium constant, <em>K</em><sub>c</sub>’, for the reverse reaction?</p><p style="margin-left: 40px;">HI(g) ⇌ ½H<sub>2</sub>(g) + ½I<sub>2</sub>(g) <em>K</em><sub>c</sub>’ = ?</p></div><div class="q-answer"><p><label class="radio" data-answer="2d3551cbab2394f5667db73ffcb301c6"><input type="radio"><span> 1 ÷ (1.60 x 10<sup>2</sup>)</span></label></p><p><label class="radio" data-answer="2375fa5e40b2dc49db082d1ca98f87ba"><input type="radio"><span> 1 ÷ √(1.60 x 10<sup>2</sup>)</span></label></p><p><label class="radio" data-answer="0577602f08cb0177cf7022615eb57879"><input type="radio"><span> √(1.60 x 10<sup>2</sup>)</span></label></p><p><label class="radio" data-answer="57fd0111f7513ba146a2b8f4e875a526"><input type="radio"><span> 0.5 x √(1.60 x 10<sup>2</sup>)</span></label></p></div><div class="q-explanation"><p>If the first equation is written as ½H<sub>2</sub>(g) + ½I<sub>2</sub>(g) ⇌ HI(g) then the equilibrium constant will be √<em>K</em><sub>c</sub>. The equilibrium constant for the reverse reaction will be (√<em>K</em><sub>c</sub>)<sup>−1</sup>, i.e. 1 ÷ √(1.60 x 10<sup>2</sup>).</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is the conjugate base of ammonia, NH<sub>3</sub>? </p></div><div class="q-answer"><p><label class="radio" data-answer="686a32d507f38654b3d727c8a4151a9f"><input type="radio"><span> NH<sub>2</sub><sup>−</sup></span></label></p><p><label class="radio" data-answer="c127db953cffab3ede6ccb14fcdad4fb"><input type="radio"><span> NH<sub>4</sub>OH</span></label></p><p><label class="radio" data-answer="07b03257b8b49a9217e57aa910538461"><input type="radio"><span> NH<sub>4</sub>NO<sub>3</sub></span></label></p><p><label class="radio" data-answer="70c7652df1614d1450ec4f641e8176a9"><input type="radio"><span> NH<sub>4</sub><sup>+</sup></span></label></p></div><div class="q-explanation"><p>Brønsted-Lowry acids donate a proton to form their conjugate base, so NH<sub>2</sub><sup>−</sup> is the conjugate base of NH<sub>3 </sub>whereas ammonia itself is the conjugate base of NH<sub>4</sub><sup>+</sup>.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>What is the pH of 0.010 mol dm<sup>−3 </sup>H<sub>2</sub>SO<sub>4</sub>(aq)? </p></div><div class="q-answer"><p><label class="radio" data-answer="4e7ef8c3e4a97ef41a9be47c43a692d6"><input type="radio"><span> between 1 and 2</span></label></p><p><label class="radio" data-answer="0dc61e9dbcf9f51129d4b730d12c718a"><input type="radio"><span> between 2 and 3</span></label></p><p><label class="radio" data-answer="c4ca4238a0b923820dcc509a6f75849b"><input type="radio"><span> 1</span></label></p><p><label class="radio" data-answer="c81e728d9d4c2f636f067f89cc14862c"><input type="radio"><span> 2</span></label></p></div><div class="q-explanation"><p>Sulfuric acid is a strong diprotic acid so [H<sup>+</sup>(aq)] will be equal to 2 x 10<sup>−2</sup> mol dm<sup>−3</sup>. pH = − log<sub>10</sub>[H<sup>+</sup>(aq)] so the pH will be less than 2 but more than 1 (as [H<sup>+</sup>(aq) would need to be 10 x 10<sup>−2</sup> mol dm<sup>−3</sup> for it to be 1). This has assumed that H<sub>2</sub>SO<sub>4</sub> is a strong dibasic acid. In fact the first dissociation to HSO<sub>4</sub><sup>−</sup> is strong but the second dissociation is not completely strong. Even so, the actual concentration of H<sup>+</sup>(aq) will still be more than 1 x 10<sup>−2</sup> (but less than 2 x 10<sup>−2</sup> mol dm<sup>−3</sup>) so the pH will between 1 and 2.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which oxide cannot be a cause of acid deposition? </p></div><div class="q-answer"><p><label class="radio" data-answer="05f338756c3795e0fe583df923cd6a65"><input type="radio"><span> CO<sub>2</sub></span></label></p><p><label class="radio" data-answer="91b760eb7abfcbe0579202d4e8b904c1"><input type="radio"><span> NO<sub>2</sub></span></label></p><p><label class="radio" data-answer="260405714079916446757f62e0feeca8"><input type="radio"><span> SO<sub>2</sub></span></label></p><p><label class="radio" data-answer="954c8ed8efbceb3a1b9495e4a1acf3a0"><input type="radio"><span> SO<sub>3</sub></span></label></p><p> </p></div><div class="q-explanation"><p>All four oxides listed are acidic but carbon dioxide only forms a weak acid in water. As rain water falls through the atmosphere it naturally dissolves carbon dioxide to become acidic but the lowest pH this can reach is about 5.6 so acid precipitation is defined as having a pH lower than 5.6.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which compound contains sulfur with the highest oxidation state? </p></div><div class="q-answer"><p><label class="radio" data-answer="5e5c30d0c17a78e92ef2acea887d79cb"><input type="radio"><span> Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub></span></label></p><p><label class="radio" data-answer="276717ad15b9c3ea595581bcb255a528"><input type="radio"><span> H<sub>2</sub>SO<sub>4</sub></span></label></p><p><label class="radio" data-answer="260405714079916446757f62e0feeca8"><input type="radio"><span> SO<sub>2</sub></span></label></p><p><label class="radio" data-answer="8f5dce78c729ac12555f31c051a4e2e2"><input type="radio"><span> H<sub>2</sub>S</span></label></p></div><div class="q-explanation"><p>The oxidation state of sulfur in sulfuric acid, H<sub>2</sub>SO<sub>4</sub> is +6. In sodium thiosulfate, Na<sub>2</sub>S<sub>2</sub>O<sub>3</sub> and in sulfur dioxide, SO<sub>2</sub> it is +4 and in hydrogen sulfide, H<sub>2</sub>S it is −2.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is a correct statement about electrochemical cells? </p></div><div class="q-answer"><p><label class="radio" data-answer="a77b4c6afdca96b99857f5e5507a5417"><input type="radio"><span> Oxidation occurs at the cathode (negative electrode) and reduction occurs at the anode (positive electrode) in an electrolytic cell.</span></label></p><p><label class="radio" data-answer="2a477cd571b3171dd5b9dd17f6a66724"><input type="radio"><span> Oxidation occurs at the cathode (positive electrode) and reduction occurs at the anode (negative electrode) in a voltaic cell.</span></label></p><p><label class="radio" data-answer="8a4c838e982e3224662952b8ccad540a"><input type="radio"><span> Voltaic cells convert energy from non-spontaneous, endothermic chemical processes to electrical energy.</span></label></p><p><label class="radio" data-answer="74855866599863fa9e90eb5508e5bdfe"><input type="radio"><span> Electrolytic cells convert electrical energy to chemical energy, by bringing about non-spontaneous processes.</span></label></p></div><div class="q-explanation"><p>Oxidation always occurs at the anode. In a voltaic cell the anode is the negative electrode and in a electrolytic cell the anode is the positive electrode. For a voltaic cell to produce electrical energy the spontaneous chemical process must be exothermic, not endothermic</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which is a correct statement about the molecule with the structural formula shown?</p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/acetophenone.png" style="width: 140px; height: 106px;"></p><p> </p></div><div class="q-answer"><p><label class="radio" data-answer="14eb5eb0732aeedcf07cacfcb1af0a74"><input type="radio"><span> It is an ether and contains an aldehyde functional group.</span></label></p><p><label class="radio" data-answer="c8afed9237bfef5b24c210cef7baa147"><input type="radio"><span> It is an aldehyde and contains an alkyl functional group</span></label></p><p><label class="radio" data-answer="87f92dc2574c5bd3b70c5ee6028297f7"><input type="radio"><span> It is a ketone and contains a phenyl functional group</span></label></p><p><label class="radio" data-answer="f693c775dac9c47c8a5b91004a4f99b3"><input type="radio"><span> It is an alkene and contains a carbonyl functional group</span></label></p></div><div class="q-explanation"><p>The molecule has the formula R-CO-R' so it is a ketone. The two functional groups in addition to the carbonyl group are a phenyl group and an alkyl goup.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>What is the name of this compound using IUPAC rules? </p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/2%2C3-dimethylbutan-2-ol.png" style="width: 200px; height: 122px;"></p></div><div class="q-answer"><p><label class="radio" data-answer="72129403c3b338b55f1f69edfde937b3"><input type="radio"><span> 2-methylpentan-2-ol</span></label></p><p><label class="radio" data-answer="2b41d8bbf0492ec84d0d5101ef0d5a15"><input type="radio"><span> 2,2-dimethylbutan-3-ol</span></label></p><p><label class="radio" data-answer="d8827c09f3bdcf0153f416437d666938"><input type="radio"><span> 2,3-dimethylbutan-2-ol</span></label></p><p><label class="radio" data-answer="8c2d854229865527e6b5a0c60e6aa7a3"><input type="radio"><span> hexan-2-ol</span></label></p></div><div class="q-explanation"><p>The compound is an isomer of hexanol, C<sub>6</sub>H<sub>13</sub>OH, but the longest chain contains four carbon atoms and there is a hydroxyl group on the second carbon atom. It is also bonded to two methyl groups, one on the second carbon atom and one on the third, so it is 2,3-dimethylbutan-2-ol.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Ethanol can be formed from the reaction of bromoethane with an aqueous solution of sodium hydroxide. </p><p style="margin-left: 40px;">C<sub>2</sub>H<sub>5</sub>Br(l) + NaOH(aq) → C<sub>2</sub>H<sub>5</sub>OH(aq) + NaBr(aq)</p><p>Which best describes how the hydroxide ion is behaving in this reaction?</p></div><div class="q-answer"><p><label class="radio" data-answer="f8513b789b606b8478ebd693b522ff4c"><input type="radio"><span> nucleophile</span></label></p><p><label class="radio" data-answer="311bbda224dbdf4ce73c4863f4703cf1"><input type="radio"><span> free radical</span></label></p><p><label class="radio" data-answer="593616de15330c0fb2d55e55410bf994"><input type="radio"><span> base</span></label></p><p><label class="radio" data-answer="4254e0ff3aacc16af1f44e285a1cee00"><input type="radio"><span> electrophile</span></label></p></div><div class="q-explanation"><p>The reaction is an example of nucleophilic substitution. A nucleophile is an electron-rich species containing a non-bonding pair of electrons that it donates to an electron-deficient carbon. The carbon atom in the C−Br bond is electron deficient as bromine is more electronegative than carbon.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>Which organic compound is produced when methanol reacts with methanoic acid in the presence of a sulfuric acid catalyst? </p></div><div class="q-answer"><p><label class="radio" data-answer="e69e27380a0146e24533c9ea5bbf1e86"><input type="radio"><span> CH<sub>3</sub>COOH</span></label></p><p><label class="radio" data-answer="212f5b9364df5fd2f8326ec51da0676f"><input type="radio"><span> HCOOCH<sub>3</sub></span></label></p><p><label class="radio" data-answer="8d6459b753533e51ff21c1219a969d6f"><input type="radio"><span> HCOOC<sub>2</sub>H<sub>5</sub></span></label></p><p><label class="radio" data-answer="7eeb5f65419261138323ed0cb14bb2f4"><input type="radio"><span> CH<sub>3</sub>COOC<sub>2</sub>H<sub>5</sub></span></label></p></div><div class="q-explanation"><p>The equation for this esterification reaction is HCOOH + CH<sub>3</sub>OH ⇌ HCOOCH<sub>3</sub> + H<sub>2</sub>O</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>An experiment was performed to measure the volume, <em>V</em> (in m<sup>3</sup>) of exactly 1.0 g of oxygen gas at different temperatures, <em>T</em> (in Kelvin) at a constant pressure of 1.0 x 10<sup>5</sup> Pa.</p><p>Which graph should be plotted from the data obtained to give a straight line with a gradient equal to the value of the gas constant, <em>R</em> (in J K<sup>−1</sup> mol<sup>−1</sup>)? Assume that oxygen behaves as an ideal gas.</p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/gradient-of-graph.png" style="width: 400px; height: 125px;"></p></div><div class="q-answer"><p><label class="radio" data-answer="7fc56270e7a70fa81a5935b72eacbe29"><input type="radio"><span> A</span></label></p><p><label class="radio" data-answer="9d5ed678fe57bcca610140957afab571"><input type="radio"><span> B</span></label></p><p><label class="radio" data-answer="0d61f8370cad1d412f80b84d143e1257"><input type="radio"><span> C</span></label></p><p><label class="radio" data-answer="f623e75af30e62bbd73d6df5b50bb7b5"><input type="radio"><span> D</span></label></p></div><div class="q-explanation"><p>The ideal gas equation is <em>pV </em>= <em>nRT</em>. Since <em>M</em><sub>r</sub> of O<sub>2</sub> is 32, <em>n</em> = 1/32 mol.<em> P</em> = 1.0 x 10<sup>5</sup> Pa = 1.0 x 10<sup>5</sup> Nm<sup>−2</sup> and I J = 1 Nm</p><p>32 <span style="color:#FF0000;">(mol<sup>−1</sup>)</span> x 1.0 x 10<sup>5</sup> <span style="color:#FF0000;">(Nm<sup>−2</sup>)</span> x V <span style="color:#FF0000;">(m<sup>3</sup>) </span>= <em>R</em> <span style="color:#B22222;">(J K<sup>−1</sup> mol<sup>−1</sup>)</span> x T <span style="color:#FF0000;">(K)</span></p><p>a plot of (3.2 x 10<sup>6</sup>)<em>V</em> against <em>T </em>will give a gradient of <em>R</em> in J K−1 mol−1)</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>What is the index of hydrogen deficiency (IHD) of 2,3,7,8-tetrachlorodibenzodioxin (molecular formula: C<sub>12</sub>H<sub>4</sub>Cl<sub>4</sub>O<sub>2</sub>)?</p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/2%2C3%2C7%2C8-tetrachlorodibenzodioxin.png" style="width: 230px; height: 107px;"></p></div><div class="q-answer"><p><label class="radio" data-answer="a87ff679a2f3e71d9181a67b7542122c"><input type="radio"><span> 4</span></label></p><p><label class="radio" data-answer="45c48cce2e2d7fbdea1afc51c7c6ad26"><input type="radio"><span> 9</span></label></p><p><label class="radio" data-answer="c81e728d9d4c2f636f067f89cc14862c"><input type="radio"><span> 2</span></label></p><p><label class="radio" data-answer="c9f0f895fb98ab9159f51fd0297e236d"><input type="radio"><span> 8</span></label></p></div><div class="q-explanation"><p>When calculating IHD O atoms count as zero and Cl atoms can be considered to behave as H atoms so the formula can be reduced to C<sub>12</sub>H<sub>8</sub>. If it was fully saturated it would be C<sub>12</sub>H<sub>26</sub> so it is 18 H atoms (or 9 H<sub>2</sub>) short which means that the IHD Is 9. This can also be seen from the structural formula as the two benzene rings each have an IHD of 4 (three for the 'double bonds' and one for the ring) and the additional ring makes a total of 9.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="exercise"><div class="q-question"><p>How many different signals will 2-methylbutane give in its <sup>1</sup>H NMR spectrum?</p><p><img alt="" class="noborder" src="../../../ib/chemistry/images/quiz/mc-test/2-methylbutane.png" style="width: 230px; height: 170px;"></p></div><div class="q-answer"><p><label class="radio" data-answer="c20ad4d76fe97759aa27a0c99bff6710"><input type="radio"><span> 12</span></label></p><p><label class="radio" data-answer="e4da3b7fbbce2345d7772b0674a318d5"><input type="radio"><span> 5</span></label></p><p><label class="radio" data-answer="a87ff679a2f3e71d9181a67b7542122c"><input type="radio"><span> 4</span></label></p><p><label class="radio" data-answer="1679091c5a880faf6fb5e6087eb1b2dc"><input type="radio"><span> 6</span></label></p></div><div class="q-explanation"><p>The hydrogen atoms are in four different chemical environments. Although not asked for the ratio of the areas under each signal will be 6:3:2:1. The 6 is due to the six H atoms in the two -CH<sub>3</sub> groups bonded to the second carbon atom in the chain, the 3 is due to the three H atoms bonded to the fourth carbon atom in the chain, the 2 is due to the two hydrogen atoms bonded to the third carbon atom in the chain and the 1 is due to the single H atom bonded to the second carbon atom in the chain.</p></div><div class="actions"><span class="score" data-score="0"></span><button class="btn check"><i class="fa fa-check-square-o"></i> Check</button></div></div><p> </p><div class="totals"><span class="score">Total Score: </span><button class="btn btn-success check-total"><i class="fa fa-check-square-o"></i> Check</button></div></div><hr></section></article><section id="media-extras"><div class="page-actions no-print navbar inline hidden-desktop"><div class="navbar-inner"><ul class="nav"><li><a class="presentation" href="#" onclick="return false;"><i class="fa fa-desktop"></i></a></li><li><a class="print-section-blog" href="#" onclick="return false;"><i class="fa fa-print"></i></a></li><li><a class="page-bookmarker" data-ticket="IB Docs (2) Team" data-pid="31516" href="#" onclick="return false;"><i class="fa fa-star"></i></a></li><li><a class="personal-notes" href="#" onclick="return false;"><i class="fa fa-file-text"></i></a></li><li><a class="" data-toggle="modal" href="#modal-feedback" onclick="return false;"><i class="fa fa-envelope-o"></i></a></li><li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" data-target="#" href="#"><i class="fa fa-share-alt"></i></a><ul class="dropdown-menu" role="menu"><li><a class="" target="_blank" title="Share on Twitter" href="https://twitter.com/share?text=%22SL+Practice+Paper+1+%281%29%22+-+via+%40InThinker+%23chemistry%0A&url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-twitter-square"></i><span>Twitter</span></a></li><li><a class="" target="_blank" title="Share on Facebook" href="https://www.facebook.com/sharer.php?u=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1&t=SL+Practice+Paper+1+(1)"><i class="fa fa-facebook-square"></i><span>Facebook</span></a></li><li><a class="" href="http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-linkedin-square"></i><span>LinkedIn</span></a></li><li><a class="" href="https://plus.google.com/share?url=https%3A%2F%2Fwww.thinkib.net%2Fchemistry%2Fpage%2F31516%2Fsl-practice-paper-1-1"><i class="fa fa-google-plus-square"></i><span>Google +</span></a></li><li><a class="" href="mailto:?subject=SL Practice Paper 1 (1)&body=To give your students access to this page you will need to change the access from " filtered="" student="" access"="" to="" "direct="" student="" access".="" %0ahttps%3a%2f%2fwww.thinkib.net%2fchemistry%2fpage%2f31516%2fsl-practice-paper-1-1"=""><i class="fa fa-envelope"></i><span>Email</span></a></li></ul></li><li><a class="" href="chemistry/teaching-materials"><i class="fa fa-puzzle-piece colored"></i></a></li></ul></div></div><div style="border-top: solid 1px #eee;border-bottom: solid 1px #eee;padding: 4px 0 4px 0;line-height: 1em;color: #666;font-size: .8em"><small><em>All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.</em></small></div></section><section id="comments"></section><div id="std-site-share-link" class="modal fade" tabindex="-1" role="dialog">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-body" style="padding: 10px; text-align: center;">
<p>Click the 'Copy URL' button to copy link to another learning platform (e.g. Google Classroom.).</p>
<div id="std-link-url" style="font-size: 20px; font-weight: 700;"></div>
<button id="copy-std-link-url" class="btn btn-default" style="margin-top: 20px;" title="Copy URL to clipboard">
<i class="fa fa-link"></i> Copy URL
</button>
</div>
</div>
</div>
</div>
<div id="modal-std-access-tools-add-task" class="modal hide fade">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h3><i class="fa fa-puzzle-piece colored"></i> SL Practice Paper 1 (1)</h3>
<label>
Send to:
<span id="modal-std-access-tools-recipients" style="font-weight: normal"></span>
</label>
</div>
<div class="modal-body">
<form id="form-send-page-task">
<div class="row-fluid">
<div class="span6">
<label>Select deadline</label>
<div class="input-prepend">
<span class="add-on" style="padding: 6px; cursor: pointer;"><i class="fa fa-calendar"></i></span>
<input type="text" name="deadline" class="deadline-datepicker" style="padding: 6px; cursor: pointer;">
</div>
</div>
<div class="span6" style="">
<div class="exam-mode-container">
<label>Exam mode</label>
<div class="input-prepend">
<span class="add-on" style="padding: 6px;">
<i class="fa fa-clock-o"></i>
</span>
<input name="minutes" type="number" min="1" max="120" placeholder="minutes" style="padding: 6px;">
</div>
</div>
</div>
</div>
<div class="row-fluid">
<label>Optional instructions</label>
<div class="row-fluid">
<textarea class="span12" name="resource-notes" style="resize: vertical;"></textarea>
</div>
</div>
<div class="row-fluid">
<div class="score-answers-container" style="margin-top: 15px;"></div>
</div>
<input type="hidden" name="ticket" value="IB Docs (2) Team">
<input type="hidden" name="subject-id" value="3">
<input type="hidden" name="resource-title" value="SL Practice Paper 1 (1)">
<input type="hidden" name="resource-type" value="quiz-page">
<input type="hidden" name="resource-id" value="31516">
<input type="hidden" name="dynamic-question-ids" id="std-tools-dyn-quiz-ids" value="">
</form>
</div>
<div class="modal-footer">
<button class="btn" data-dismiss="modal">
Cancel
</button>
<div class="pull-right save-actions">
<span class="btn disabled hidden">
<i class="fa fa-spin fa-circle-o-notch"></i>
Processing...
</span>
<a class="save-task-from-tools also-send btn btn-success" disabled="disabled">
<i class="fa fa-check"></i> Send task
</a>
</div>
</div>
</div>
</div><!-- /#main-column -->
</div>
</div><!-- /#content -->
</div>
</div>
<div id="footer">
<div class="wmap">
<div class="layout-wrapper">
<p>
© <script>document.write(new Date().getFullYear())</script> <em>InThinking / IB Documents (2) Team | Version: 31.01.2023</em>
|
<a target="_self" href="/subscribe/about-us">
About us
</a>
|
<a target="_self" href="/subscribe/legal">
Legal
</a>
|
<a target="_self" href="/subscribe/contact">
Contact
</a>
</p>
<p>
<a class="social" target="_blank" href="https://twitter.com/inthinker">
<img src="../../../social/twitter-square-1.svg"> Twitter
</a>
<a class="social" target="_blank" href="https://www.facebook.com/inthinking.net">
<img src="../../../social/facebook-square-1.svg"> Facebook
</a>
<a class="social" target="_blank" href="https://www.linkedin.com/company/9s4we1">
<img src="../../../social/linkedin-square-1.svg"> LinkedIn
</a>
</p>
</div>
</div>
</div>
<input id="tzoffset" type="hidden" value="-36000"><div id="modal-session-expired" class="modal fade" tabindex="-1" role="dialog" data-backdrop="static" data-keyboard="false">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<h3 style="margin-top: 0">Your session has expired</h3>
</div>
<div class="modal-body" style="padding: 10px;">
<p>You will have to reload and log in again.</p>
</div>
<div class="modal-footer">
<a id="session-expired" class="btn btn-danger pull-right" href="#">
<i class="fa fa-refresh"></i> Reload
</a>
</div>
</div>
</div>
</div>
<!-- Loading scripts at the end of the body means faster page loading -->
<script src="../../../js/jquery-1.10.2.min-1.js"></script>
<script src="../../../js/bootstrap.min-1.js"></script>
<script type="text/javascript" src="../../../js/jq-fancybox/jquery.fancybox.pack-1.js"></script>
<script>var pageId = 31516;</script><script src="../../../js/autosize.min-1.js" media="screen"></script><script src="../../../js/user/section-faves.min-1.js?v=202110111730"></script><script type="text/javascript" src="../../../assets/js/ckeditor5-utils.min-1.js?v=20211202"></script><script type="text/javascript" src="../../../assets/build/app-1.js?v=202204141130"></script><script>var isStudent=false; var siteName="chemistry";var answerIds=[];</script><script type="text/javascript" src="../../../js/tib-quizzes-utils.min.js?v=202211151130"></script><script type="text/javascript" src="../../../js/tib-quizzes.min.js?v=202211282022"></script>
<script>function ad91db59e4be31356(gradeQuiz) {
var url = '/pages/quizzes/get-structure.php',
data = {
'ticket' : $('#ticket').val(),
'data-structure': gradeQuiz.dataStructure,
'score-answers' : gradeQuiz.scoreAnswers,
'std-answers' : gradeQuiz.stdAnswers,
'n-question' : gradeQuiz.nQuestion,
'std-task-id' : gradeQuiz.taskStdId,
'quiz-seconds' : gradeQuiz.quizSeconds,
'is-exam' : gradeQuiz.isExam,
'student-ID' : typeof studentID !== 'undefined' ? studentID : '',
'task-ID' : $('#task-ID').length ? $('#task-ID').val() : ''
};
$.post(url, data, 'json').done(function(response){
var r = JSON.parse(response);
if (r.success == 1) {
if (gradeQuiz.checkTotal) {
logQuiz(gradeQuiz.button, gradeQuiz.quiz, r, gradeQuiz.notRequired);
} else {
// Check single exercise both from teacher and student side
if (!r.ss || !r.sa) {
alert('You cannot do this task again until after the deadline');
return false;
}
var logger = {};
var mScoreMark = checkExercise(gradeQuiz.exercise, r, gradeQuiz.nQuestion);
//Only needed on Student Access: one by one question log
if (typeof quizLogger === 'function') {
logger = quizLogger(gradeQuiz.quiz, mScoreMark, false);
}
//Only needed on Student Access
if (typeof saveQuizLog === 'function' && !$.isEmptyObject(logger)) {
saveQuizLog(logger, 10, 0);
}
gradeQuiz.button.remove();
}
}
if (r.success == 2) {
sendLogs = false;
// Show score only if allowed to show it
if (r.ss) {
var totalScore = r.score;
var totalMark = r.mark;
var scoreContainer = $('a.check-total').closest('.totals').find('span.score');
if (totalScore == 100) { scoreContainer.addClass('A'); }
else if (totalScore > 70) { scoreContainer.addClass('B'); }
else if (totalScore > 50) { scoreContainer.addClass('C'); }
else if (totalScore > 30) { scoreContainer.addClass('D'); }
else { scoreContainer.addClass('E'); }
scoreContainer.append('<strong>'+ totalMark +'</strong> <small style="opacity: .8">('+ totalScore +'%)</small>');
} else {
$('#quiz-checker').find('.score-container').remove();
}
$('#task-completed-badge').show();
$("html, body").animate({ scrollTop: $('#task-completed-badge').position().top });
controlExamInCombinedTask();
gradeQuiz.button.remove();
}
if (r.success == 0) {
alert(r.msg);
}
});
}
$(document).ready(function(){
if (!$('#ticket').length) {
var inputTicket = '<input type="hidden" id="ticket" value="IB Docs (2) Team">';
$('body').append(inputTicket);
}
$('section').on('click', '.tib-quiz #save-quiz-progress', function(e) {
e.preventDefault();
let button = $(this);
button.html("<i class=\"fa fa-fw fa-spinner fa-spin colored\"></i> Saving...");
setTimeout(function() {
button.html("<i class=\"fa fa-fw fa-check colored\"></i> Saved!");
}, 2000);
setTimeout(function() {
button.html("<i class=\"fa fa-fw fa-save\"></i> Save progress");
}, 4500);
});
/**
* Quiz final green CHECK button
*/
$('section').on('click', '.tib-quiz .check-total', function(e) {
e.preventDefault();
var body = $('body');
var button = $(this);
var quiz = $(this).closest('.tib-quiz');
var dataStructure = quiz.attr('data-structure');
var scoreAnswers = quiz.attr('data-score-answers');
var notRequired = false;
var taskID = $('#task-ID').length ? $('#task-ID').val() : '';
var taskStdId = $('#std-task-id').length ? $('#std-task-id').val() : '';
//Only for combined tasks
if (typeof button.attr('data-task-id') !== 'undefined') {
var taskID = button.attr('data-task-id');
$('#task-ID').val(taskID);
}
if (typeof button.attr('data-combined-task-required') !== 'undefined' && button.attr('data-combined-task-required') === 'short-answer') {
notRequired = true;
}
if (typeof scoreAnswers == 'undefined') {
scoreAnswers = null;
}
var quizSeconds = '';
if (typeof amountSecs != 'undefined') {
quizSeconds = amountSecs;
}
var isExam = false;
if (typeof examTime != 'undefined') {
isExam = true;
}
body.css('cursor', 'wait');
// Remove grade-by-question 'save progress' button
if ($('#save-quiz-progress').length) {
$('#save-quiz-progress').remove();
}
$.when(
// Collect the std answers
checkAllExercises(quiz)
).then(
function(stdAnswers) {
var gradeQuiz = {
button: button,
quiz: quiz,
dataStructure: dataStructure,
scoreAnswers: scoreAnswers,
stdAnswers: stdAnswers,
checkTotal: true,
nQuestion: null,
exercise: null,
notRequired: notRequired,
taskStdId: taskStdId,
quizSeconds: quizSeconds,
isExam: isExam
};
ad91db59e4be31356(gradeQuiz);
body.css('cursor', 'default');
// Was the task already submitted time ago
if( $('#task-completed-badge').hasClass('already-submitted')) {
$('#task-completed-badge').show();
$('#return-my-tasks-q').show();
$("html, body").animate({ scrollTop: $('#task-completed-badge').position().top });
}
}
);
});
/**
* Quiz exercise individual CHECK button
*/
$('section').on('click', '.exercise .btn.check', function(e) {
e.preventDefault();
var body = $('body');
var button = $(this);
var exercise = button.closest('div.exercise');
var quiz = $(this).closest('.tib-quiz');
var dataStructure = quiz.attr('data-structure');
var scoreAnswers = quiz.attr('data-score-answers');
var nQuestion = 0;
//Only for combined tasks
if (typeof $('.check-total').attr('data-task-id') !== 'undefined') {
var taskID = $('.check-total').attr('data-task-id');
$('#task-ID').val(taskID);
}
if (typeof scoreAnswers == 'undefined') {
scoreAnswers = null;
}
var gradeQuiz = {
button: button,
quiz: quiz,
dataStructure: dataStructure,
scoreAnswers: scoreAnswers,
checkTotal: false,
nQuestion: nQuestion,
exercise: exercise,
notRequired: false,
};
body.css('cursor', 'wait');
quiz.find('.exercise').each(function(){
if ($(this)[0] == exercise[0]) {
$(this).find('.q-answer').find('input').attr('disabled', true);
if (quiz.find('.exercise .btn.check').length === 1) {
quiz.find('.check-total').trigger('click');
return;
}
gradeQuiz['nQuestion'] = nQuestion;
ad91db59e4be31356(gradeQuiz);
body.css('cursor', 'default');
}
nQuestion++;
});
});
});</script>
<script type="text/javascript" src="../../../js/tib-fullscreen/tib-fullscreen.min-1.js?v=202109221648"></script><script src="../../../js/std-access/std-access-tools.min-1.js?v=202204280950"></script><script src="../../../js/jq-datepicker/bootstrap-datepicker.min-1.js"></script><script src="../../../js/std-access/std-access-tools-add-task.min-1.js?v=202204280950"></script><script src="../../../js/std-access/std-assignments-utils.min-1.js?v=202211281800"></script><script src="../../../js/sidemenu/sidemenu.min-1.js?v=202011301145"></script><script src="../../../js/header-circle.min-1.js?v=20220113"></script><script src="../../../js/password-toggler.min-1.js?v=20220929"></script><script type="text/javascript" src="../../../js/cookies.min-1.js"></script>
<script type="text/javascript">
// The cookies alert
if (! readCookie("displayCookieConsent") && ! readCookie("y") ) {
var cookieMSG = "We use cookies. By continuing to use this website you are giving consent to cookies being used.";
setTimeout(function() {
$.ajax({
cache: true,
url: "js/cookiechoices.js",
dataType: "script",
success: function () {
cookieChoices.showCookieConsentBar(cookieMSG, 'close', 'Read more', "chemistry/legal#cookies");
}
});
}, 2000);
}
</script><script>var sAJAX='/pages/activity/user-stats-page.php?t=IB Docs (2) Team&x=6868';var sData='0ebg+I>F/4F[IxZ4hvT)hIn82Oc2UjpCqiT2UM]Sn-WiIxZMoxQg2|w4Lvc4qtQg+Ipc2[8SU-W[UxbMLNbYoiQChNf[5[/[UxbOqNuc2|w6IicY/4FMUxbeqIn9LIb4qTZ80Ipc/4F[2vwOqt/6/Obc2iZQ2|ncIicY/4F[]MWQ]-+[ak==';var loopSecs = 30;var lsKey = '8ed8cca89842bfcfa8203814b6d2bc7a';</script><script src="../../../js/user/user-stats-page.min-1.js?v=202102101800"></script><script>var sessionUpdateSecs = 600;</script><script type="text/javascript" src="../../../js/session-updater-1.js?v=20200831"></script>
<script type="text/javascript">
$(document).ready(function(){
function padLeft(str,max){return str.length<max?padLeft("0"+str,max):str}function padRight(str,max){return str.length<max?padRight(str+"0",max):str}$("body").on("click",'a[href="#"], a.fancybox-nav, a[data-toggle="tab"], a[data-toggle="dropdown"], a[data-toggle="collapse"], a[data-toggle="modal"]',(function(e){e.preventDefault()}));var topmenuOffset=0,topmenuHeight=0;function fixDiv(t,h){$(window).scrollTop()<topmenuOffset||$("#topmenu ul.level-1").is(":visible")?($("#topmenu").css({position:"",width:""}),$("#topmenu").removeClass("fixed-top"),$("body").css({"padding-top":"0"})):($("#topmenu").css({position:"fixed",top:"0",width:$("#topmenu").width()+"px"}),$("#topmenu").addClass("fixed-top"),$("body").css({"padding-top":topmenuHeight+"px"}))}function fixSearchNav(){var searchMenuTop=topmenuOffset+topmenuHeight,searchMenuH=$("#nav-menu-search").is(":visible")?$("#nav-menu-search").outerHeight():0;$(window).scrollTop()>searchMenuTop-topmenuHeight?($("#nav-menu-search").css({position:"fixed",top:topmenuHeight+"px",left:"0",right:"0"}),$("#nav-menu-search").addClass("fixed-top"),$("body").css("padding-top",topmenuHeight+searchMenuH+"px")):($("#nav-menu-search").css({position:""}),$("#nav-menu-search").removeClass("fixed-top"),$("body").css("padding-top","0"))}$("#topmenu").length&&(topmenuOffset=$("#topmenu").offset().top,topmenuHeight=$("#topmenu").outerHeight(),fixDiv(),$(window).scroll((function(){fixDiv(),fixSearchNav()}))),$("a.toggle-menu-search").on("click",(function(e){e.preventDefault(),$("#nav-menu-search").slideToggle("fast",(function(){$(this).find('input[name="s"]').focus()}))}));var menuH=$("#topmenu").height(),itemH=$("#topmenu > nav > ul > li").height();function fancyScrollTo(id){$("html, body").animate({scrollTop:$("#"+id).offset().top-300},300)}function printSectionBlog(){var w=$(window).width()/2,h,windowSettings="height="+($(window).height()-100)+", width="+w+", left=0, top=0, resizable=no, ";windowSettings+="scrollbars=yes, toolbar=no, menubar=no, location=no, ",windowSettings+="directories=no, status=yes";var myWindow=window.open("","Page printer",windowSettings),containerHtml=["<html>","<head>","<title>Page printer</title>",'<link rel="stylesheet" type="text/css" href="'+window.location.origin+'/css/style.min.css?v=202211152130">','<link rel="stylesheet" type="text/css" href="'+window.location.origin+"/css/style"+SITE_TAG+'.min.css?v=202104061357">','<link rel="stylesheet" type="text/css" href="'+window.location.origin+'/css/snippets.min.css?v=202210181500">','<link rel="stylesheet" type="text/css" href="'+window.location.origin+'/css/article.min.css?v=202210181500">',"</head>","<body>",$("section#main-content").html().replace(/<span\sclass="MJX_Assistive_MathML".*?<\/span>/g,""),"</body>","</html>"].join("");containerHtml=containerHtml.replace(/src="files\//gi,'src="'+window.location.origin+"/files/"),myWindow.document.write(containerHtml),myWindow.document.close(),myWindow.focus(),setTimeout((function(){$.when(myWindow.print()).then(myWindow.close())}),1e3)}function PopupPrint(target){window.print()}$("#topmenu > nav > ul > li").each((function(){if(menuH>itemH&&$(this).position().top<1){var i=itemH+1;$(this).find("ul:first").css("margin-top","-"+i+"px")}})),$("#topmenu > nav > ul > li").on("mouseenter mouseleave",(function(e){var submenu=$("ul:first",this),submenuW=submenu.width();$(this).offset().left+submenuW>$(window).width()&&(submenu.css("right","0"),submenu.find("ul").each((function(){if(!$(this).hasClass("fixed")){var l=$(this).width()+submenuW;$(this).css("margin-left","-"+l+"px"),$(this).addClass("fixed")}})))})),$("a.showhider").click((function(e){e.preventDefault();var box="#"+$(this).attr("rel"),show='<i class="fa fa-eye"></i>',hide='<i class="fa fa-eye-slash"></i>';$(box).slideToggle("fast"),$(this).html($(this).html()==show?hide:show),$(this).attr("title","Show"==$(this).attr("title")?"Hide":"Show")})),$("a.scroll-to").click((function(e){e.preventDefault();var n=$("#"+$(this).data("target")).offset().top-70;$("html, body").animate({scrollTop:n},300)})),$("a.print-section-blog").click((function(e){e.preventDefault(),printSectionBlog()})),$(".print-button").click((function(e){var target;e.preventDefault(),PopupPrint("#"+$(this).data("target-id"))})),$(".alert.alert-success").delay(6e3).hide("fast",fixDiv());var fancyParent=1==$("body").find($("#main-article")).length?"#main-article":"body",fancyOptions={loop:!1,openEffect:"elastic",closeEffect:"elastic",nextEffect:"fade",prevEffect:"fade",parent:fancyParent,helpers:{title:{type:"inside"}}};if($("ul.gallery").each((function(){var rel=$(this).find("li:first-child > a:first-child").attr("rel");$('ul.gallery a.fancy[rel="'+rel+'"]').fancybox(fancyOptions)})),$(".carousel.slide").each((function(){var rel="gallery-"+$(this).data("id");$('.carousel.slide a.fancy[rel="'+rel+'"]').fancybox(fancyOptions)})),$("img.pop").parent("a").each((function(){$(this).attr("title",$(this).children("img").attr("alt"))})),$("img.pop").parent("a").fancybox({loop:!1,helpers:{title:{type:"inside"}}}),!are_cookies_enabled()){var msg='<div class="alert alert-error"><i class="fa fa-warning"></i> Your browser does not accept cookies from this site. Please enable cookies to log in.</div><div class="alert alert-info"><i class="fa fa-question-circle"></i> Enabling cookies in <a target="_blank" style="margin: 0; padding: 0;" href="https://support.mozilla.org/en-US/kb/enable-and-disable-cookies-website-preferences">Firefox</a>, <a target="_blank" style="margin: 0; padding: 0;" href="https://support.google.com/accounts/answer/61416?hl=en">Chrome</a>, <a target="_blank" style="margin: 0; padding: 0;" href="http://windows.microsoft.com/en-us/windows-vista/block-or-allow-cookies">Explorer</a></div>';$("#modal-login .modal-header").append(msg)}if($(".panel-expandable > .panel-heading").click((function(e){e.preventDefault();var panel=$(this).closest(".panel-expandable"),expandables=panel.hasClass("panel-has-footer")?".panel-body, .panel-footer":".panel-body";panel.find(".panel-body").is(":visible")?(panel.find(expandables).slideUp("fast"),panel.find(".expander > .fa-minus").removeClass("fa-minus").addClass("fa-plus")):(panel.find(expandables).slideDown("fast"),panel.find(".expander > .fa-plus").removeClass("fa-plus").addClass("fa-minus"))})),$("#modal-find-out-more").css({width:.8*$("#container").width()+"px","margin-left":-.4*$("#container").width()+"px"}),$(".modal-xxl").length){var modalTopPos=Math.round(.07*$(window).height());$(window).width()>1200&&$(".modal-xxl").css({"max-width":$(window).width()>960?"960px":$(window).width()+"px",width:$(window).width()>960?"960px":$(window).width()+"px","margin-left":$(window).width()>960?"-480px":Math.round($(window).width()/2)}),$(".modal-xxl").css("top",modalTopPos+"px"),$(".modal-xxl").on("shown",(function(){var mHeaderH=$(this).find(".modal-header").outerHeight(),mBody=$(this).find(".modal-body"),mBodyH=mBody.outerHeight(),mFooterH=$(this).find(".modal-footer").outerHeight(),bottomOfTheModal=modalTopPos+mHeaderH+mBodyH+mFooterH;if(bottomOfTheModal<$(window).height())mBodyH+=$(window).height()-bottomOfTheModal-60,mBody.css("max-height",mBodyH+"px");else{$(window).scrollTop(0),modalTopPos=10,$(".modal-xxl").css("top",modalTopPos+"px"),bottomOfTheModal=modalTopPos+mHeaderH+mBodyH+mFooterH,availableScroll=bottomOfTheModal-$(window).height()+modalTopPos;var lastPos=-1;$(window).on("scroll",(function(){var s=$(window).scrollTop()>availableScroll?availableScroll:$(window).scrollTop();newPos=modalTopPos-s,newPos!=lastPos&&($(".modal-xxl").css("top",newPos+"px"),lastPos=newPos)}))}}))}function popupHelp(url,title,w,h){var dualScreenLeft=void 0!==window.screenLeft?window.screenLeft:screen.left,dualScreenTop=void 0!==window.screenTop?window.screenTop:screen.top,width,height,left=(window.innerWidth?window.innerWidth:document.documentElement.clientWidth?document.documentElement.clientWidth:screen.width)/2-w/2+dualScreenLeft,top=(window.innerHeight?window.innerHeight:document.documentElement.clientHeight?document.documentElement.clientHeight:screen.height)/2-h/2+dualScreenTop,newWindow=window.open(url,title,"menubar=no,location=no,resizable=0, width="+w+", height="+h+", top="+top+", left="+left);return window.focus&&(newWindow?newWindow.focus():$('<div class="alert alert-warning" style="margin-bottom: 0px;"><p class="help-block">Pop Up blocked. Please allow Pop Ups in your browser settings.</p></div>').insertBefore("body")),newWindow}if($(".open-student-access-help").click((function(e){e.preventDefault();var h=$(window).height()-20,w=$(window).width()<1280?$(window).width():1280;popupHelp(helpURL,"Student Access Help",w,h)})),$(".pop-up-help").click((function(e){e.preventDefault();var url=$(this).attr("href"),title=$(this).data("title"),h=$(window).height()-20,w;popupHelp(url,title,$(window).width()<1280?$(window).width():1280,h)})),$("section.tib-hiddenbox").length){var count=0;$($("section.tib-hiddenbox").get().reverse()).each((function(){var box=$(this),revealButton;$("<a />").attr("class","btn showhider").attr("rel","hiddenBoxContent"+count).attr("style","margin-bottom: 0;").html('<i class="fa fa-eye"></i>').insertBefore(box);var newContainer=$("<div />").attr("class","hidden-content").attr("id","hiddenBoxContent"+count).html(box.html());newContainer.hide(),newContainer.insertBefore(box),box.remove(),count++})),$("a.showhider").on("click",(function(e){var container=$("#"+$(this).attr("rel"));container.is(":hidden")?(container.fadeIn("fast"),$(this).html('<i class="fa fa-eye-slash"></i>')):(container.fadeOut("fast"),$(this).html('<i class="fa fa-eye"></i>'))}))}
function loadComments(){$.get("pages/comment.php",{action:"get-list",ticket:"IB Docs (2) Team",site_with_comments:"1",general_id:"3",sitename:"chemistry",section_id:"31516"},(function(t){"1"==t.success?($("#comments").html(t.html),"undefined"!=typeof CKEDITOR&&initCommentsEditor()):alert("Error (lc1): please contact support")}),"json")}$(document).ready((function(){loadComments()}));let commentEditor={};function initCommentsEditor(){const t=document.querySelector("#comment-content");t&&CKEDITOR.BasicEditor.create(t,{toolbar:{viewportTopOffset:50,items:["bold","italic","link","subscript","superscript"]},link:{decorators:{addLinkNoFollow:{mode:"automatic",callback:function(t){if(null!=t)return["http://","http://www","https://","https://www","ftp:"].some((o=>t.startsWith(o)))},attributes:{target:"_blank",class:"ck-link",rel:"nofollow"}}}}}).then((function(t){commentEditor=t,commentEditor.execute("heading",{value:"paragraph"})})).catch((function(t){console.error(t)}))}function replaceComment(content,commentId){$("#cancel-comment-post").trigger("click"),$("#comm-"+commentId+" > .comment-content div.comment-text").html(content)}function placeComment(html,fatherId){$("#comment-form").hide(),$("#comment-form textarea").val(""),fatherId>0?($("#comments #comm-"+fatherId).append(html),$("#comments").append($("#comment-form"))):$("#comments").append(html).append($("#comment-form")),$(".comment .fa-arrow-down").removeClass("fa-arrow-down").addClass("fa-reply"),$(".comment-content").removeClass("marked"),$("#comment-form").show("fast")}function update_sticky_comments(arrIds,mode){$.post("pages/edit/update-sticky-comments.php?mode="+mode,{ids:arrIds,ticket:$("#comment-ticket").val()},(function(data){1==data.success?("set"==data.mode&&$("#sticky-"+data.id).parents("div.comment").each((function(e){$(this).find("a.pull-right").first().addClass("sticky"),$(this).find("a.pull-right").first().attr("title","Unmark as important")})),"unset"==data.mode&&($("#sticky-"+data.id).removeClass("sticky"),$("#sticky-"+data.id).attr("title","Mark as important"),$("#sticky-"+data.id).closest("div.comment").find("div.comment").each((function(e){$(this).find("a.pull-right").first().removeClass("sticky"),$(this).find("a.pull-right").first().attr("title","Mark as important")})))):alert(data.error)}),"json")}"undefined"!=typeof CKEDITOR&&initCommentsEditor(),$("section#comments").on("click","#edit-comment",(function(e){e.preventDefault();var commentId=$("form#comment-form #comment-mode").val(),commentContent=commentEditor.getData(),ticket=$("#comment-ticket").val(),sectionId=$("#section-id").val();$.post("pages/comment.php",{action:"edit",comment_id:commentId,content:commentContent,ticket:ticket},(function(data){"0"==data.success?alert(data.error):replaceComment(data.text,commentId)}),"json")})),$("section#comments").on("click","a.edit-comment",(function(e){e.preventDefault(),$(".comment .hidden").removeClass("hidden");var commentId=$(this).data("comment-id"),form=$("form#comment-form"),text=$("#comm-"+commentId+" > .comment-content div.comment-text").html();commentEditor.setData(text),$("form#comment-form textarea").val(""),$("form#comment-form textarea").val(text),$("#comm-"+commentId+" > .comment-content > img").addClass("hidden"),$("#comm-"+commentId+" > .comment-content > div.comment-text").addClass("hidden"),$("#comm-"+commentId+" > .comment-footer").addClass("hidden"),$("#comm-"+commentId+" > .comment-content").append(form),$("form#comment-form #submit-comment").hide(),$("form#comment-form #edit-comment").show(),$("form#comment-form #cancel-comment-post").show(),$("form#comment-form #comment-mode").val(commentId),fancyScrollTo("comment-form"),$("form#comment-form textarea").focus()})),$("section#comments").on("click","#submit-comment",(function(e){e.preventDefault();var commentContent=commentEditor.getData(),fatherId=$("#father-comment").val(),ticket=$("#comment-ticket").val(),sectionId=$("#section-id").val();$.post("pages/comment.php",{action:"post",section_id:sectionId,father_id:fatherId,content:commentContent,ticket:ticket},(function(data){if("0"==data.success)alert(data.error);else{commentEditor.setData(""),placeComment(data.html,fatherId),$("form#comment-form #cancel-comment-post").hide();var n=0;$("#n-comments").text().length>0&&(n=parseInt($("#n-comments").text())),$("#n-comments").text(n+1)}}),"json")})),$("section#comments").on("click","a.reply-comment",(function(e){e.preventDefault(),$(".comment .fa-arrow-down").removeClass("fa-arrow-down").addClass("fa-reply"),$(".comment-content").removeClass("marked");var form=$("form#comment-form"),fatherId=$(this).parent().parent(".comment").attr("rel");form.find("#father-comment").val(fatherId),$(this).parent().parent(".comment").find("> .reply-area").append(form),$(this).find(".fa-reply").removeClass("fa-reply").addClass("fa-arrow-down"),$(this).parent().prev(".comment-content").addClass("marked"),$("form#comment-form #cancel-comment-post").show(),fancyScrollTo("comment-form"),$("form#comment-form textarea").focus()})),$("section#comments").on("click","#cancel-comment-post",(function(e){e.preventDefault(),$(".comment .hidden").removeClass("hidden"),$(".comment .fa-arrow-down").removeClass("fa-arrow-down").addClass("fa-reply"),$(".comment-content.marked").removeClass("marked"),commentEditor.setData("");var form=$("form#comment-form");$("section#comments").append(form),$("form#comment-form #father-comment").val("0"),$("form#comment-form textarea").val(""),$("form#comment-form #comment-mode").val("new"),$("#edit-comment").hide(),$(this).hide(),$("#submit-comment").show()})),$("section#comments").on("click","a.delete-comment",(function(e){var commentId=$(this).data("comment-id"),isFather=$("#comm-"+commentId).children(".comment").length>0,ticket=$("#comment-ticket").val(),msg="You are going to delete a comment.\n\nThis action cannot be undone.\n\nAre you sure?";isFather&&(msg="You are going to delete a comment and all its replies.\n\nThis action cannot be undone.\n\nAre you sure?"),confirm(msg)&&$.post("pages/comment.php",{action:"delete",comment_id:commentId,is_father:isFather,ticket:ticket},(function(data){if("0"==data.success)alert(data.error);else{$("#comm-"+commentId+".comment").replaceWith(data.text);var n=0;$("#n-comments").text().length&&(n=parseInt($("#n-comments").text())),$("#n-comments").text(n-parseInt(data.deleted))}}),"json"),e.preventDefault(),e.stopPropagation()})),$("section#comments").on("click","a.pull-right",(function(e){e.preventDefault();var arrayIds=[];$(this).hasClass("sticky")?(arrayIds.push($(this).closest("div.comment").attr("rel")),$(this).closest("div.comment").find("div.comment").each((function(e){arrayIds.push($(this).attr("rel"))})),update_sticky_comments(arrayIds,"unset")):($(this).parents("div.comment").each((function(e){arrayIds.push($(this).attr("rel"))})),update_sticky_comments(arrayIds,"set"))}));$('#tl-tabs a').click(function (e) {e.preventDefault();$(this).tab('show');});$('img.ico[src="/img/icons/comments.png"]').each((function(){var comment=$(this).attr("title");$(this).removeAttr("title"),$(this).wrap('<a class="tib-popover" href="#" data-content="'+comment+'" data-togle="popover" data-placement="top" />')})),$('img.ico[src="img/icons/comments.png"]').each((function(){var comment=$(this).attr("title");$(this).removeAttr("title"),$(this).wrap('<a class="tib-popover" href="#" data-content="'+comment+'" data-togle="popover" data-placement="top" />')})),$(".tib-popover").popover({html:!0,trigger:"hover",delay:{show:300,hide:300},placement:function(context,source){var position=$(source).position();return position.top>200?"top":position.left<515?"right":position.top<200?"bottom":position.left>515?"left":"top"}}).click((function(e){e.preventDefault()}));var carouselTime=6500;$("div.carousel.slide").carousel({interval:carouselTime}),$(".tib-indicators > img").click((function(){var index=$(this).index(),container;$(this).closest(".carousel.slide").carousel(index)}));
$('a.btn.showhider').click(function(e) {
var showHiderId = $( this ).attr('rel');
if ( $('#'+showHiderId).find('iframe').length > 0 ) {
$('#'+showHiderId+' iframe').each(function() {
if ( $(this).attr('src').indexOf('.pdf') > 0 ) {
this.contentWindow.location.reload(true);
}
});
}
});
var hTopmenu = $('#topmenu').height();
var n = 0;
$('nav.top-nav > ul > li').each(function(k, e) {
if (n > 1) {
var diff = hTopmenu-(e.offsetTop+e.offsetHeight);
$(e).find(' > ul ').css('margin-top', '-'+diff+'px');
}
n++;
});
});
</script>
</body>
</html>