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.

Step-by-step guide

  1. Attempt the question using the written question only.
    • If you’re struggling, or you don’t know where to start, go to step 4.
  2. Compare your answer with the answer provided.
    • If your answer was correct, well done. Go to step 5.
  3. 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.
  4. 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.
  5. Finally, when you have answered the question and identified any mistakes, move on to a more difficult question.

A flow chart illustrating how to progress through increasingly challenging questions using the worked answers to help resolve difficulties or mistakes

A flow chart illustrating the recommended approach to using these worked answers to tackle increasingly difficult questions.

Questions and worked answers by difficulty

Use the step-by-step guide above to work through these questions, from least difficult to most difficult.

Low difficulty

Moderate difficulty

High difficulty

Additional resources

Chemistry Olympiad worked answers