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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: Energy changes: fuel cells and hydrogen as a fuel. Pick an answer — get the mark scheme instantly.

Question · Difficulty 2/3

Which half equation takes place at the negative electrode of a hydrogen fuel cell in acidic conditions?

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One real Chemistry question.No signup. 30 seconds.

One real Chemistry question.
No signup. 30 seconds.