Course	Code	Written assessments
Chemistry A	H432	Two papers of 2 hours 15 minutes and one of 1 hour 30 minutes
Chemistry B (Salters)	H433	Two papers of 2 hours 15 minutes and one of 1 hour 30 minutes

The same timings do not mean the same papers

Chemistry A groups its assessments around physical chemistry, synthesis and analysis, and a final paper drawing ideas together. Salters uses chemical contexts and includes a scientific literacy paper. Your tutor should choose questions from your actual specification. Both routes include a separately reported practical endorsement, organised through your school or centre.

A lesson built around one sticking point

Understand

Find the missing link

For an equilibrium problem, explain the particles and changes first. Identify what is known and what the question is asking.

Apply

Solve with support

Work through one example, saying why each step is valid. Keep units and chemical reasoning visible.

Check

Try a fresh context

Use a related question with different numbers or wording. Check whether the method still makes sense without prompts.

Frequently asked questions

Can I get help with spectroscopy and organic synthesis?

Ask tutors about these topics when you meet. A useful approach is to combine evidence from spectra with possible structures, then justify each part of a proposed synthesis.

Will every tutor teach both OCR courses?

Not necessarily. The listing shows reported board experience. Send H432 or H433 and the topic you need before arranging lessons.

Can we focus on improving exam answers?

Yes. Bring marked work so you can separate a misunderstanding from an incomplete explanation or calculation error. Discuss this in your free 15-minute introduction.

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Book a free 15-minute introduction — meet your tutor and discuss your goals.

View all 5 OCR A-Level Chemistry tutors

OCR A Level Chemistry tutors