![]() Past paper | Mark scheme | Examiners’ report 2015 Topics include thermodynamics of the sulfur–iodine cycle reactions of tungsten NMR of unsaturated molecules the synthesis of Flibanserin and analysing ancient bones. Past paper | Mark scheme | Examiners’ report 2016 Topics include the properties of sodium hypochlorite reactions and kinetics of atmospheric gases alloys of titanium the structure and synthesis of twistane and reactions of superbases. Past paper | Mark scheme | Examiners’ report 2017 Topics include reactions within lithium-ion batteries sustainable methods of producing ammonia isotopes and reactions of Uranium the synthesis of dextromethorphan and compounds of helium and sodium. Past paper | Answer booklet | Mark scheme 2018 Topics include carbon dioxide in fizzy drinks electrolysis of precious metals and NMR spectra of platinum complexes the kinetics of nerve agent treatments synthesising pesticides and calculations on biodegradable polymers. Past paper | Answer booklet | Mark scheme 2019 Topics include the reactions and structure of calcium carbide the thermodynamics of hydrogen as a fuel the structure of UV-absorbing chemicals structures of silicon oxides kinetics in colourful compounds and synthesising -ladderanoic acid. Past paper | Answer booklet | Mark scheme 2020 Topics include reactions that produce phosphine carbon capture by calcium looping synthesis and reactions of levulinic acid Newman projections synthesis of hydroxychloroquine and kinetics of the formation of xenon difluoride. Past paper | Answer booklet | Mark scheme | Examiners’ report 2021 Topics include E10 petrol the chemistry of nitrous oxide synthesis of the platonic solid cubane calculations of equilibria in lateral flow tests synthesis and structure of the world’s smallest Chinese knot and calculations based on the ensilication of vaccine components to improve their stability. Past paper | Answer booklet | Mark scheme | Examiners’ report 2022 Topics include rocket fuels electronegativity, bonding, and structure amino acid complexes vaping and vitamin E acetate and cheese manufacturing and the production of holes in Swiss cheese. Build up to tackling a whole past paper using our series of worked answers, designed to help students less familiar with Olympiad-style questions develop the skills and confidence they need, one step at a time.īrowse and download resources by year 2023.Check out our Chemistry Olympiad support booklet for further guidance on the types of questions used in the competition, as well as example questions with commentary and analysis.Questions often get more difficult as a paper progresses, but students studying A-level or equivalent qualifications should be able to attempt most parts. ![]() Browse the summary of papers and topics below to find a particular question, or select a paper to work through from beginning to end.Ĭhemistry Olympiad papers focus on problem-solving and reward resilience, so students should attempt as many parts of each question as they can, and try not to be put off if there are parts they can’t answer. Even a seemingly ‘low’ mark can earn a medal in the competition. Past papers can be used flexibly by teachers and students, with varying degrees of independence. ![]() How to use Chemistry Olympiad past papers
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