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Every question is written against the published AQA GCSE Chemistry syllabus and reviewed for accuracy before being added to the bank. We match the command words (state, describe, explain, evaluate), mark allocations, and difficulty tier you'll see on real AQA past papers. Explanations are written in the style of official examiner mark schemes so students learn exactly what marks are being awarded for.

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AQA · GCSE · Chemistry

One real Chemistry question.
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Topic: Chemical analysis: chromatography and Rf values. Pick an answer — get the mark scheme instantly.

Question · Difficulty 2/3

A spot moves 4 cm while the solvent front moves 8 cm. What is the Rf value?

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One real Chemistry question.No signup. 30 seconds.

One real Chemistry question.
No signup. 30 seconds.