Chemistry path · GCSE Chemistry

Are correct formulas enough to balance an equation?

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Practice question

Magnesium reacts with oxygen to form magnesium oxide. The correct formulae are Mg, O₂ and MgO. Write a balanced symbol equation and explain how you checked it.

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Official curriculum

4.1.1.1 Balanced chemical equations

This challenge practises knowledge and exam skills from the official GCSE science curriculum. Use these sources to see the exact subject content and its wider Key Stage 4 context.

AQA specification 4.1.1.1 Balanced chemical equations GOV.UK Key Stage 4 science programme

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