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href="https://www.thinkib.net/chemistry/page/16329/teaching-each-topic-sub-topic" class="father">Teaching each topic & sub-topic</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16328/topic-1" >Topic 1</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16907/topics-2-12-" >Topics 2 & 12 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17021/topics-3-13" >Topics 3 & 13</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17114/topics-4-14" >Topics 4 & 14</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17669/topics-5-15-" >Topics 5 & 15 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17848/topics-6-16" >Topics 6 & 16</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18038/topics-7-17-" >Topics 7 & 17 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18120/topics-8-18-" >Topics 8 & 18 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18350/topics-9-19" >Topics 9 & 19</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18475/topics-10-20-" >Topics 10 & 20 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17285/topics-11-21-" >Topics 11 & 21 </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16441/the-nature-of-science" class="father">The Nature of Science</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16450/key-terms-concepts" >Key terms & concepts</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/34566/nos-critical-thinking" >NOS & Critical Thinking</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/32100/how-the-elements-were-named" >How the elements were named</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/36753/the-culture-of-chemistry" >The Culture of Chemistry</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17333/nature-of-science-questions" >Nature of Science questions</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16413/incorporating-im-tok-utilization-etc" class="father">Incorporating IM, TOK, &#039;Utilization&#039; etc.</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16414/topic-1" >Topic 1</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16916/topics-2-12" >Topics 2 & 12</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17023/topics-3-13-" >Topics 3 & 13  </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17055/topics-4-14-" >Topics 4 & 14 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17270/topics-5-15-" >Topics 5 & 15  </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17854/topics-6-16-" >Topics 6 & 16 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18041/topics-7-17-" >Topics 7 & 17 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18099/topics-8-18" >Topics 8 & 18</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18349/topics-9-19-" >Topics 9 & 19 </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18420/topics-10-20" >Topics 10 & 20</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17269/topics-11-21-" >Topics 11 & 21 </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/17866/utilization-relationships-between-topics-" class="father">&#039;Utilization&#039; - Relationships between topics </a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/17867/relating-topics-4-14-to-all-the-other-topics" >Relating Topics 4 & 14 to all the other topics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17868/example-of-connections" >Example of connections</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/34404/hydroxychloroquine-ib-chemistry" >Hydroxychloroquine & IB Chemistry</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/35418/ammonium-nitrate-ib-chemistry" >Ammonium nitrate & IB Chemistry</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16685/multiple-choice-tests-for-each-topic" class="father">Multiple choice tests for each topic</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16687/sl-questions-by-topic" >SL Questions by topic</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16688/hl-questions-by-topic" >HL Questions by topic</a></li></ul></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/19044/options-" >Options </a><ul class="level-1"><li  ><a href="https://www.thinkib.net/chemistry/page/19503/option-a-" class="father">Option A  </a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/19504/introduction-to-materials-science-" >Introduction to materials science </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19519/metals-and-icp-spectroscopy" >Metals and ICP spectroscopy</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19541/catalysts-" >Catalysts </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19580/liquid-crystals" >Liquid crystals</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19665/polymers-" >Polymers  </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19672/nanotechnology" >Nanotechnology</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19843/environmental-impact-plastics" >Environmental impact - plastics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19858/superconducting-metals-x-ray-crystallography-" >Superconducting metals & X-ray crystallography </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19666/condensation-polymers" >Condensation polymers</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19916/environmental-impact-heavy-metals" >Environmental impact - heavy metals</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/19284/option-b-" class="father">Option B </a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/19290/introduction-to-biochemistry-" >Introduction to biochemistry  </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19287/proteins-enzymes-" >Proteins & enzymes </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19291/lipids" >Lipids</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19299/carbohydrates-" >Carbohydrates </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19305/vitamins-" >Vitamins   </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19313/biochemistry-the-environment-" >Biochemistry & the environment </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19336/proteins-enzymes-ahl-" >Proteins & enzymes (AHL)   </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19347/nucleic-acids-" >Nucleic acids   </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19361/biological-pigments-" >Biological pigments   </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19366/stereochemistry-in-biomolecules" >Stereochemistry in biomolecules</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/19390/option-c-" class="father">Option C </a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/19391/energy-sources" >Energy sources</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19407/fossil-fuels" >Fossil fuels</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19411/nuclear-fusion-nuclear-fission-reactions" >Nuclear fusion & nuclear fission reactions</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19429/solar-energy" >Solar energy</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19437/environmental-impact-global-warming" >Environmental impact - global warming</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19453/electrochemistry-rechargeable-batteries-fuel-cells" >Electrochemistry, rechargeable batteries & fuel cells</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19458/nuclear-fusion-fission-hl-" >Nuclear fusion & fission (HL)    </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19470/photovoltaic-cells-and-dsscs" >Photovoltaic cells and DSSCs</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/19078/option-d" class="father">Option D</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/19079/pharmaceutical-products-drug-action-" >Pharmaceutical products & drug action </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19158/aspirin-penicillin-" >Aspirin & penicillin  </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19174/opiates" >Opiates</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19184/ph-regulation-of-the-stomach" >pH regulation of the stomach</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19194/antiviral-medications-" >Antiviral medications </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19211/environmental-impact-of-some-medications" >Environmental impact of some medications</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19254/taxol-a-chiral-auxiliary-case-study" >Taxol - a chiral auxiliary case study</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19258/nuclear-medicine-" >Nuclear medicine  </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19273/drug-detection-analysis-" >Drug detection & analysis </a></li></ul></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16592/practical-scheme-of-work-ia-" >Practical scheme of work & IA </a><ul class="level-1"><li  ><a href="https://www.thinkib.net/chemistry/page/16682/internal-assessment" class="father">Internal Assessment</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/18892/scaffolding-the-investigation" >&#039;Scaffolding&#039; the investigation</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18896/timing-organisation-" >Timing & organisation </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18905/choosing-the-research-question" >Choosing the research question</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18946/personal-engagement" >Personal engagement</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18950/exploration" >Exploration</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18957/analysis" >Analysis</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18965/evaluation" >Evaluation</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18966/communication" >Communication</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19882/internal-standardization-of-the-ia" >Internal standardization of the IA</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19901/submitting-the-samples-for-moderation" >Submitting the samples for moderation</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/33754/ten-suggestions-for-ias-using-secondary-data" >Ten suggestions for IAs using secondary data</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/37544/gaining-full-marks-for-a-databased-ia-" >Gaining full marks for a databased IA </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19506/ia-example-marking-exercise-" >IA example & marking exercise </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/23929/genuine-examples-of-moderated-ia-reports" >Genuine examples of moderated IA reports</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/25234/examples-of-teacher-marked-ia-reports-" >Examples of teacher-marked IA reports </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/37542/history-of-internal-assessment" >History of Internal Assessment</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16598/mandatory-laboratory-components" class="father">Mandatory laboratory components</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16613/formula-of-magnesium-oxide-" >Formula of magnesium oxide </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16612/determining-the-mr-of-an-unknown-gas" >Determining the <i>M</i><sub>r</sub> of an unknown gas</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16615/acid-base-titrations-" >Acid-base titrations </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16616/a-green-acid-base-practical" >A green acid-base practical</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16617/analysis-of-aspirin-tablets" >Analysis of aspirin tablets</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16618/caco3-in-egg-shells" >CaCO<sub>3</sub> in egg shells</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16644/enthalpy-changes" >Enthalpy changes</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16631/reaction-rates" >Reaction rates</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16635/rate-dependent-factors" >Rate-dependent factors</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16636/determining-ea-for-a-reaction" >Determining <i>E</i><sub>a</sub> for a reaction</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16637/iodination-of-propanone" >Iodination of propanone</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18144/titrations-with-a-ph-meter" >Titrations with a pH meter</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18355/redox-titration-with-kmno4-" >Redox titration with KMnO<sub>4</sub> </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16640/voltaic-cells" >Voltaic cells</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16659/3-d-molecular-modelling-" >3-D molecular modelling </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/17168/other-good-practicals" class="father">Other good practicals</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/17196/common-chemical-reactions" >Common chemical reactions</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/227/elements-oxides-of-the-third-period-" >Elements & oxides of the third period </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17239/the-halogens" >The halogens</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17162/boiling-points-of-mixtures" >Boiling points of mixtures</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17170/polarity-of-molecules" >Polarity of molecules</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18083/le-chateliers-principle-" >Le Chatelier&#039;s principle </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19582/determining-kc-for-an-esterification-reaction" >Determining <i>K</i><sub>c</sub> for an esterification reaction</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18164/redox-reactions-of-vanadium-" >Redox reactions of vanadium </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18351/chlorine-in-swimming-pools-" >Chlorine in swimming pools </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18178/analysis-of-cuii-ions-in-solution-" >Analysis of Cu(II) ions in solution </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18179/percentage-of-copper-in-brass" >Percentage of copper in brass</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18356/electrolytic-cells-" >Electrolytic cells </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18598/reactions-of-organic-compounds" >Reactions of organic compounds</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18752/hydrolysis-of-halogenoalkanes" >Hydrolysis of halogenoalkanes</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18784/preparation-of-13-dinitrobenzene-" >Preparation of 1,3-dinitrobenzene </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19022/determination-of-an-organic-structure" >Determination of an organic structure</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19887/preparation-of-nylon-66" >Preparation of nylon 6,6</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19343/determination-of-vitamin-c-content-" >Determination of vitamin C content </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19342/hydrolysis-of-starch-" >Hydrolysis of starch </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/19159/preparation-purification-of-aspirin-" >Preparation & purification of aspirin </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/18851/ict-in-practical-work" class="father">ICT in practical work</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/18852/data-logging-" >Data logging </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18853/software-for-graph-plotting-" >Software for graph plotting </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18854/spreadsheets-for-data-processing-" >Spreadsheets for data processing </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18855/databases" >Databases</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/18856/computer-modelling-simulations-" >Computer modelling & simulations </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16594/group-4-project" class="father">Group 4 Project</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16595/practicalities" >Practicalities</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16596/reflective-statement-" >Reflective statement </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16666/a-new-laboratory" >A new laboratory?</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16284/exams" >Exams</a><ul class="level-1"><li  ><a href="https://www.thinkib.net/chemistry/page/16286/essential-facts" class="father">Essential Facts</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16287/objectives-command-terms" >Objectives & command terms</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16288/grade-descriptors" >Grade descriptors</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16289/grade-boundaries" >Grade boundaries</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16302/paper-1-multiple-choice" class="father">Paper 1 (Multiple Choice)</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16303/advice-to-students-paper-1" >Advice to students (Paper 1)</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/31515/practice-paper-1-exams" >Practice Paper 1 exams</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16305/paper-2" class="father">Paper 2</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16306/advice-to-students-paper-2" >Advice to students (Paper 2)</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16307/areas-of-difficulty" >Areas of difficulty</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16313/paper-3-" class="father">Paper 3 </a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16314/advice-to-students-paper-3" >Advice to students (Paper 3)</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16342/data-response-questions" >Data response questions</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/20054/experimental-work-questions" >Experimental work questions</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16324/the-examination-process" class="father">The examination process</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/16316/setting-the-exam-papers" >Setting the exam papers</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16317/predicted-grades" >Predicted grades</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16318/marking-the-papers" >Marking the papers</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16319/commenting-on-the-exams" >Commenting on the exams</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16320/grade-awarding" >Grade Awarding</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16321/enquiry-upon-results" >Enquiry upon results</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16322/chief-examiners-report" >Chief Examiner&#039;s report</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/16323/retaking-the-exam" >Retaking the exam</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/16325/faqs" >FAQs</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/3147/ib-core" >IB Core</a><ul class="level-1"><li  ><a href="https://www.thinkib.net/chemistry/page/3149/learner-profile" >Learner Profile</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/21735/extended-essays-" class="father">Extended Essays </a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/21736/overview-" >Overview </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/21780/responsibilities" >Responsibilities</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/21790/resources" >Resources</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/21800/research" >Research</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/21804/writing-the-essay" >Writing the essay</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/21810/assessment" >Assessment</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/22434/summary-of-advice-" >Summary of advice </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/25272/faqs-" >FAQs </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/307/theory-of-knowledge-tok" class="father">Theory of Knowledge (TOK)</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/41171/the-12-tok-concepts" >The 12 TOK concepts</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/3507/why-tok-chemistry" >Why TOK & Chemistry?</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/3505/a-modern-paradigm" >A modern paradigm</a></li></ul></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/17783/fast-track-to-tests-questions" >Fast track to tests & questions</a><ul class="level-1"><li  ><a href="https://www.thinkib.net/chemistry/page/17784/sl-multiple-choice-tests-on-individual-topics" >SL Multiple choice tests on individual topics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/24351/sl-multiple-choice-quizzes-on-sub-topics" >SL Multiple choice &#039;quizzes&#039; on sub-topics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/31519/sl-practice-paper-1-exams" >SL Practice Paper 1 exams</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17786/sl-questions-on-each-sub-topic" >SL Questions on each sub-topic</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/20431/sl-paper-3-section-a-questions" >SL Paper 3 Section A questions</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17792/sl-questions-on-the-options" >SL Questions on the options</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/24897/sl-quizzes-on-option-sub-topics-" >SL Quizzes on option sub-topics </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17785/hl-multiple-choice-tests-on-individual-topics" >HL Multiple choice tests on individual topics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/24352/hl-multiple-choice-quizzes-on-sub-topics" >HL Multiple choice &#039;quizzes&#039; on sub-topics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/31520/hl-practice-paper-1-exams-" >HL Practice Paper 1 exams </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17787/hl-questions-on-each-sub-topic-" >HL Questions on each sub-topic </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/20428/hl-paper-3-section-a-questions" >HL Paper 3 Section A questions</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/17793/hl-questions-on-the-options" >HL Questions on the options</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/24973/hl-quizzes-on-option-sub-topics" >HL Quizzes on option sub-topics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/41573/printable-versions-of-written-tasks-" >Printable versions of written tasks </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/41465/complete-course-for-students-" >Complete course for students </a><ul class="level-1"><li  ><a href="https://www.thinkib.net/chemistry/page/27988/full-coverage-of-each-topic-and-sub-topic" class="father">Full coverage of each topic and sub-topic</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/27959/topic-1-stoichiometric-relationships" >Topic 1 : Stoichiometric relationships</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/27960/topics-2-12-atomic-structure" >Topics 2 & 12 : Atomic structure</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/27965/topics-3-13-periodicity" >Topics 3 & 13 : Periodicity</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/27971/topics-4-14-chemical-bonding-structure" >Topics 4 & 14 : Chemical bonding & structure</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/27987/topics-5-15-energeticsthermochemistry" >Topics 5 & 15 : Energetics/thermochemistry</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/27995/topics-6-16-chemical-kinetics" >Topics 6 & 16 : Chemical kinetics</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28001/topics-7-17-equilibrium-" >Topics 7 & 17 : Equilibrium </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28017/topics-8-18-acids-and-bases-" >Topics 8 & 18 : Acids and bases </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28031/topics-9-19-redox-process" >Topics 9 & 19 : Redox process</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28061/topics-10-20-organic-chemistry" >Topics 10 & 20 : Organic chemistry</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28038/topics-11-21-measurement-data-processing-analysis" >Topics 11 & 21 : Measurement, data processing & analysis</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28074/option-a-materials-" >Option A : Materials </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28087/option-b-biochemistry" >Option B : Biochemistry</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28098/option-c-energy-" >Option C : Energy </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/28109/option-d-medicinal-chemistry" >Option D : Medicinal chemistry</a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/41553/practical-work-including-ia-group-4-project-" class="father">Practical work (including IA & Group 4 Project) </a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/41528/internal-assessment" >Internal Assessment</a></li><li  ><a 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class="father">The Nature of Science</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/41489/key-terms-concepts-" >Key terms & concepts </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/41492/how-the-elements-were-named-" >How the elements were named </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/41490/nos-critical-thinking" >NOS & Critical Thinking</a></li><li  ><a href="https://www.thinkib.net/chemistry/page/41493/the-culture-of-chemistry-" >The Culture of Chemistry </a></li><li  ><a href="https://www.thinkib.net/chemistry/page/41494/nature-of-science-questions-" >Nature of Science questions </a></li></ul></li><li  ><a href="https://www.thinkib.net/chemistry/page/41401/external-assessment-exams" class="father">External assessment (Exams)</a><ul class="level-2"><li  ><a href="https://www.thinkib.net/chemistry/page/41403/essential-facts-" >Essential Facts </a></li><li  ><a 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					<div id="main-column" class="span9">	<div class="pull-right pagination pagination-right pagination-small"><ul id="blog-top-pagination"><li ><a href="chemistry/blog?page=16"><i class="fa fa-chevron-circle-left"></i> Prev</a></li><li class="active"><a href="chemistry/blog?page=17">page <strong>17</strong></a></li><li ><a href="chemistry/blog?page=18">Next <i class="fa fa-chevron-circle-right"></i></a></li></ul></div>
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		<a title="Atomic masses change" href="chemistry/blog/8075/atomic-masses-change"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/sulfur.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/8075/atomic-masses-change">Atomic masses change</a> <span class="details pull-right">30 December 2010 </span></h3>
		<p>It has been known for a long time that the relative atomic mass, Ar, of lead, Pb, changes slightly depending upon the origin of the lead as it is the end product of natural radioactive decay series. If... <a class="font-normal" href="chemistry/blog/8075/atomic-masses-change">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="Practical work and assessment" href="chemistry/blog/8058/practical-work-and-assessment"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/Practicals/Reflux apparatus.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/8058/practical-work-and-assessment">Practical work and assessment</a> <span class="details pull-right">27 December 2010 </span></h3>
		<p>Probably the most contentious area in the current IB programme is the assessment of practical work. Teachers who have recently retired or moved away from teaching the IB have told me that they only thing... <a class="font-normal" href="chemistry/blog/8058/practical-work-and-assessment">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="World&#39;s smallest Periodic Table?" href="chemistry/blog/8047/worlds-smallest-periodic-table"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/blog/Martyn Poliakoff.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/8047/worlds-smallest-periodic-table">World&#39;s smallest Periodic Table?</a> <span class="details pull-right">22 December 2010 </span></h3>
		<p> Two days to go to Christmas. What do you give a chemist for Christmas? Well, although it was for his birthday, not Christmas, Nottingham University’s Dr Mike Fay at the Nanotechnology and Nanoscience... <a class="font-normal" href="chemistry/blog/8047/worlds-smallest-periodic-table">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="Blue light cystoscopy" href="chemistry/blog/7961/blue-light-cystoscopy"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/blog/protoporphyinIX.png" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/7961/blue-light-cystoscopy">Blue light cystoscopy</a> <span class="details pull-right">10 December 2010 </span></h3>
		<p>Recent research into cancer detection and treatment provides an interesting example of how connections can be made between various parts of the IB syllabus. Specifically porphyrins in hemoglobin (B.9.2),... <a class="font-normal" href="chemistry/blog/7961/blue-light-cystoscopy">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="Explosives" href="chemistry/blog/7643/explosives"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/blog/PETN(1).png" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/7643/explosives">Explosives</a> <span class="details pull-right">1 November 2010 </span></h3>
		<p>What might be flying with you – or even with your IB exam scripts, extended essays or IA samples for moderation as they are sent round the world as cargo courtesy of DHL? On 29 October 2010 two parcels... <a class="font-normal" href="chemistry/blog/7643/explosives">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="Sticky tape & a pencil" href="chemistry/blog/7438/sticky-tape-a-pencil"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/blog/sticky tape.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/7438/sticky-tape-a-pencil">Sticky tape & a pencil</a> <span class="details pull-right">5 October 2010 </span></h3>
		<p>So you need fancy electronic data loggers or university analytical machines to do real research these days? Not so – all you need is a pencil and a roll of sellotape® (sticky tape). The Nobel Prize... <a class="font-normal" href="chemistry/blog/7438/sticky-tape-a-pencil">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="How &#039;International&#039; is IB Chemistry?" href="chemistry/blog/7129/how-international-is-ib-chemistry"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/blog/Alexander Butlerov.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/7129/how-international-is-ib-chemistry">How &#039;International&#039; is IB Chemistry?</a> <span class="details pull-right">8 September 2010 </span></h3>
		<p>Is IB Chemistry truly international? When I worked just in the British system teaching A level Chemistry I did not realise at the time how anglocentric my view of Chemistry was. I only used British (as... <a class="font-normal" href="chemistry/blog/7129/how-international-is-ib-chemistry">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="Women in Chemistry" href="chemistry/blog/6882/women-in-chemistry"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/blog/Mariecurie.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/6882/women-in-chemistry">Women in Chemistry</a> <span class="details pull-right">26 August 2010 </span></h3>
		<p> Two thirds of people living in the UK cannot name a single female scientist either living or historical. For 18-24 year olds this figure rises to 88%. These shocking figures from a recent survey by the... <a class="font-normal" href="chemistry/blog/6882/women-in-chemistry">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="Agricultural chemistry - an option?" href="chemistry/blog/4346/agricultural-chemistry-an-option"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/Options/Staithes.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/4346/agricultural-chemistry-an-option">Agricultural chemistry - an option?</a> <span class="details pull-right">22 August 2010 </span></h3>
		<p>  In the early 1970s when I first started teaching the 16-19 age range I worked at a comprehensive school in Whitby in Northern England and lived in a small fishing village called Staithes in Yorkshire.... <a class="font-normal" href="chemistry/blog/4346/agricultural-chemistry-an-option">more <i class="fa fa-arrow-circle-right"></i></a></p>
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		<a title="Objective 3?" href="chemistry/blog/3889/objective-3"><img src="https://teacher-sites-storage-thumbnails.inthinking.net/ib/chemistry/images/fish_and_chips.jpg" class="thumb thumb64" /></a>
		<h3 class="blog-list-title"><a href="chemistry/blog/3889/objective-3">Objective 3?</a> <span class="details pull-right">9 August 2010 </span></h3>
		<p>Consider the following typical IB question for HL Option C: Chemistry in industry and technology.“Discuss the properties needed for a substance to be used in liquid-crystal displays.”  <a class="font-normal" href="chemistry/blog/3889/objective-3">more <i class="fa fa-arrow-circle-right"></i></a></p>
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