0654.C3.1.05 — Balance and interpret simple symbol 7 Construct symbol equations with state equations, including state symbols symbols, including ionic equa: past paper questions
Real questions on 0654.c3.1.05 — balance and interpret simple symbol 7 construct symbol equations with state equations, including state symbols symbols, including ionic equa
The newest 8 of 8 written questions. Open one to see it on the real paper.
- 0654/32 · October/November 2025 · Q7d(ii)[1]
State what (aq) means in the symbol equation.
See it on the paper → - 0654/41 · October/November 2025 · Q7b(i)[3]
Construct the balanced symbol equation for this reaction. Include state symbols. ( ) + ( ) ( ) + ( )
See it on the paper → - 0654/41 · October/November 2025 · Q7b(ii)[1]
Tick (✓) the correct box to identify the type of reaction that takes place. cracking neutralisation combustion
See it on the paper → - 0654/41 · May/June 2025 · Q7c[2]
In the third stage, iron(III) oxide, Fe 2 O 3 , reacts with carbon monoxide. Iron and carbon dioxide are made. Construct the balanced symbol equation for this reaction.
See it on the paper → - 0654/32 · February/March 2025 · Q8b(ii)[2]
Complete the balanced equation for the reaction between chlorine and sodium. Include state symbols. (ii)
See it on the paper → - 0654/42 · February/March 2025 · Q6a[2]
Construct the balanced symbol equation for this reaction.
See it on the paper → - 0654/12 · May/June 2023 · Q35[1]
What happens during this process?
See it on the paper → - 0654/12 · October/November 2019 · Q3[1]
Which result with the biuret test shows that protein is present?
See it on the paper →
What examiners said
Many candidates correctly identified the products as Fe and CO 2. The most commonly seen incorrect answer was Fe2. Fewer candidates were successful at balancing the equation.
— Examiner report, May/June 2025, 0654/41 Q7(c) (Cambridge)
Many candidates correctly balanced the equation. Fewer were able to include the correct state symbols.
— Examiner report, February/March 2025, 0654/32 Q8(b)(ii) (Cambridge)
Common misconceptions included that hydrogen was not a diatomic molecule and that magnesium chloride consisted of one atom of magnesium and one atoms of chlorine instead of two chlorine atoms. Occasionally some candidates tried to include water in their equation.
— Examiner report, February/March 2025, 0654/42 Q6(a) (Cambridge)
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