0654.C1.2.01 — Describe and explain diffusion in terms of kinetic particle theory: past paper questions

Real questions on 0654.c1.2.01 — describe and explain diffusion in terms of kinetic particle theory

The newest 6 of 6 written questions. Open one to see it on the real paper.

1. 0654/41 · May/June 2025 · Q11a(i)[3]

   Describe one similarity and two differences between boiling and evaporation. similarity difference difference

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2. 0654/41 · May/June 2025 · Q11a(ii)[3]

   State three factors which increase the rate of evaporation.

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3. 0654/21 · October/November 2019 · Q15[1]

   Which processes are chemical changes?

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4. 0654/21 · October/November 2019 · Q19[1]

   Which reactions involve reduction and oxidation?

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5. 0654/22 · October/November 2019 · Q15[1]

   processes are chemical changes?

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6. 0654/11 · May/June 2019 · Q2[1]

   Which row correctly describes the diffusion of molecules from P to Q?

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What examiners said

Some candidates were able to explain similarities and differences between boiling and evaporation. Marks were often missed as candidates just made a statement about one of the processes and did not describe the difference. The most common correct ideas where that they both involve a liquid changing to a gas, and that boiling produces bubbles and evaporation does not.

— Examiner report, May/June 2025, 0654/41 Q11(a)(i) (Cambridge)

Most candidates identified a factor that would change the rate of evaporation, but many did not clarify how this factor would need to change to increase the rate of evaporation. Basic responses of temperature and surface area were commonly seen, but the qualification that these would need to increase was often omitted.

— Examiner report, May/June 2025, 0654/41 Q11(a)(ii) (Cambridge)