Challenge and support students learning to tackle Olympiad-style questions
Drawing on a range of questions from past Chemistry Olympiad papers, these worked answers are designed to give students the structured support and practise they need to attempt Olympiad-style questions themselves.
Each worked answer includes a video walkthrough and transcript, with questions covering a variety of topics and difficulty levels.
How to use these resources
For students who might not otherwise get the opportunity to participate in the Chemistry Olympiad, the worked answers give them a chance to practise independently and build their confidence, attempting questions of increasing difficulty.
- Attempt the question using the written question only.
- If you’re struggling, or you don’t know where to start, go to step 4.
- Compare your answer with the answer provided.
- If your answer was correct, well done. Go to step 5.
- If your answer was incorrect, look back through the answer to try and spot the mistake.
- When you have found your mistake and understand the correct answer, go to step 5.
- If you’re struggling, listen to the video up to the point at which you feel able to try again.
- When you feel ready, go to step 1.
- Finally, when you have answered the question and identified any mistakes, move on to a more difficult question.
Questions and worked answers by difficulty
Use the step-by-step guide above to work through these questions, from least difficult to most difficult.
- Thermodynamic calculations and sherbet lemons (question 1, 2006)
- Writing ‘explosive’ equations (question 3, 2011)
- Solving a puzzle using spectroscopy (question 4, 2011)
- Enthalpy and the chemistry of matches (question 3, 2009)
- Organic synthesis and ambergris substitutes (question 1, 2010)
- Titration and phosphates in the environment (question 3, 2007)
- The microscopic structure of gold leaf (question 6, 2010)
- Explore our full collection of Olympiad past papers, including questions and answers.
- Take a look at our Chemistry Olympiad support booklet for further guidance on tackling Olympiad-style questions.
Chemistry Olympiad worked answers
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