0654.P2.2.04 — Describe evaporation in terms of the escape of the more energetic particles from the surface of a liquid: past paper questions
Real questions on 0654.p2.2.04 — describe evaporation in terms of the escape of the more energetic particles from the surface of a liquid
The newest 6 of 6 written questions. Open one to see it on the real paper.
- 0973/31 · May/June 2026 · Q12b(ii)[2]
(ii) The water in the sea is warmed by the Sun. Some water molecules evaporate. Complete the sentence to describe the process of evaporation. Evaporation escape More .......... particles FrOM .......... .......... liquid.
See it on the paper → - 0973/31 · October/November 2022 · Q6a(i)[1]
State the name of the process by which liquid water in the sea forms water vapour in the air.
See it on the paper → - 0973/41 · May/June 2021 · Q9e(i)[3]
Describe, in terms of particles and their energies, how the sweat cools the skin.
See it on the paper → - 0973/42 · May/June 2021 · Q6d[2]
During the experiment, the student spills some water on the table. The water evaporates. State two ways to increase the rate of evaporation.
See it on the paper → - 0973/41 · October/November 2020 · Q3b[2]
Some puddles of water have formed on the road. Explain, in terms of water molecules, how the rate of evaporation of water from a puddle is affected by the strength of the wind blowing across the puddle.
See it on the paper → - 0973/31 · May/June 2020 · Q6b(iii)[2]
The water in the glass is evaporating. Describe evaporation in terms of the motion of the water molecules.
See it on the paper →
What examiners said
Many candidates described how sweat cools the skin by referring to the most energetic particles leaving the surface when water evaporates. Fewer completed their answer by explaining the temperature drop in terms of the fall in average energy of the remaining particles. Responses which involved a description of vasodilation and homeostasis did not answer the question.
— Examiner report, May/June 2021, 0973/41 Q9(e)(i) (Cambridge)
Some responses did state that stronger wind increases the rate of evaporation. The strongest candidates explained that this is due to more air molecules escaping into the moving air, rather than suggesting that the wind provides molecules in the surface with the energy required to escape. Many candidates needed to describe the effect of increasing wind strength rather than focussing on a compariso...
— Examiner report, October/November 2020, 0973/41 Q3(b) (Cambridge)
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