IGCSE Co-ordinated Sciences (9–1) 0973 · Chemistry · 155

0654.C12.1.02 — Describe a: (a) . solvent as a substance that dissolves a solute (b) . solute as a substance that is dissolved in a solvent (c) . solution a: past paper questions

5 real questionsasked in 3 of the last 10 exam series2024–2026usually: State, Determine, Complete, Define

Real questions on 0654.c12.1.02 — describe a: (a) . solvent as a substance that dissolves a solute (b) . solute as a substance that is dissolved in a solvent (c) . solution a

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

0973/31 · May/June 2026 · Q7b[1]
Astudent measures the melting point of a sample of sea water. The student finds that the melting point is between —2°C and —3°C. State why the melting point is not 0°C.
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0973/42 · May/June 2025 · Q7a[1]
The ionic compound sodium sulfate contains the ions Na + and SO 42– . Determine the formula of sodium sulfate. formula =
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0973/42 · May/June 2025 · Q8a[2]
The balanced symbol equation for the reaction is shown. Complete the state symbols in the equation.
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0973/42 · May/June 2025 · Q8b(i)[1]
State when the reaction finished. time = minutes (i)
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0973/31 · May/June 2024 · Q5f[2]
Sodium chloride is a solute. Water is a solvent. Define the terms solute and solvent. solute solvent
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What examiners said

Occasionally, candidates tried unsuccessfully to include charges. However, most candidates could determine the correct formula.
— Examiner report, May/June 2025, 0973/42 Q7(a) (Cambridge)

The state symbols for carbon dioxide and calcium carbonate were generally recognised. The most common incorrect response was to use the state symbol (l) rather than (aq) for hydrochloric acid.
— Examiner report, May/June 2025, 0973/42 Q8(a) (Cambridge)

Most candidates could interpret the graph to give a correct time.
— Examiner report, May/June 2025, 0973/42 Q8(b)(i) (Cambridge)

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In the syllabus

155 0654.C12.1.02 — Describe a: (a) . solvent as a substance that dissolves a solute (b) . solute as a substance that is dissolved in a solvent (c) . solution a

Describe a: (a) . solvent as a substance that dissolves a solute (b) . solute as a substance that is dissolved in a solvent (c) . solution as a mixture of one or more solutes dissolved in a solvent (d) . saturated solution as a solution containing the maximum concentration of a solute dissolved in the solvent at a specified temperature (e) . residue as a solid substance that remains after evaporation, distillation, filtration or any similar process (f) . filtrate as a liquid or solution that has passed through a filter

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