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IGCSE Combined Science 0653 · Chemistry · 25

0653.C3.1.06 — Construct symbol equations with state symbols, including ionic equations: past paper questions

5 real questionsasked in 5 of the last 10 exam series2024–2025usually: Write, Give, Complete, Identify

Real questions on 0653.c3.1.06 — construct symbol equations with state symbols, including ionic equations

The newest 5 of 5 written questions. Open one to see it on the real paper.

  1. 0653/43 · October/November 2025 · Q4a[2]

    Three products are formed in the reaction: magnesium chloride MgCl 2 , a gas and one other product. Give the balanced symbol equation for this reaction.

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  2. 0653/42 · May/June 2025 · Q4d[1]

    Aqueous sodium fluoride reacts with aqueous silver nitrate, AgNO 3 , to form aqueous sodium nitrate, NaNO 3 , and one other product. Write the balanced symbol equation for this reaction.

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  3. 0653/42 · February/March 2025 · Q5a(iii)[2]

    Complete the ionic equation for this reaction. Al + Fe 3+ +

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  4. 0653/21 · October/November 2024 · Q17[1]

    What is the ionic equation for this reaction?

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  5. 0653/42 · May/June 2024 · Q5b(i)[2]

    Include the state symbols. Write a balanced symbol equation for the reaction between nitrogen monoxide and oxygen.

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What examiners said

Some candidates correctly rearranged the components of each compound to balance the products with the reactants.

— Examiner report, May/June 2025, 0653/42 Q4(d) (Cambridge)

Some candidates gained full credit but often this type of ionic equation was unfamiliar. Candidates often gained partial credit for stating Fe. Some candidates may have used the balanced equation given in the question as a clue but suggestions such as 2Fe were not accepted.

— Examiner report, February/March 2025, 0653/42 Q5(a)(iii) (Cambridge)

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0653.C3.1.06 — Construct symbol equations with state symbols, including ionic equations — IGCSE Combined Science 0653 past paper questions | AssessPro