0654.C1.1.03 — Describe changes of state in terms of melting, 5 Explain changes of state in terms of kinetic boiling, evaporating, freezing and condensing : past paper questions
Real questions on 0654.c1.1.03 — describe changes of state in terms of melting, 5 explain changes of state in terms of kinetic boiling, evaporating, freezing and condensing
The newest 6 of 6 written questions. Open one to see it on the real paper.
- 0654/41 · May/June 2025 · Q5c(i)[1]
Label the part of the graph where the ice is melting with the letter X.
See it on the paper → - 0654/41 · May/June 2025 · Q5c(ii)[1]
Describe how Fig. 5.1 shows that the ice is pure rather than a mixture.
See it on the paper → - 0654/11 · May/June 2024 · Q14[1]
Which row identifies the changes in processes 1 and 2?
See it on the paper → - 0654/11 · May/June 2024 · Q31[1]
What does this mean?
See it on the paper → - 0654/11 · October/November 2019 · Q16[1]
What is the dot-and-cross diagram for a water molecule?
See it on the paper → - 0654/11 · October/November 2019 · Q17[1]
What is the formula of hydrogen peroxide?
See it on the paper →
What examiners said
Many candidates correctly identified the part of the graph where melting was occurring.
— Examiner report, May/June 2025, 0654/41 Q5(c)(i) (Cambridge)
The idea that melting of a pure substance occurs at one temperature only was well understood. Being able to explain this in terms of the horizontal part of the graph was less well expressed.
— Examiner report, May/June 2025, 0654/41 Q5(c)(ii) (Cambridge)
Candidates easily recognised the dot-and-cross diagram for water.
— Examiner report, October/November 2019, 0654/11 Q16 (Cambridge)
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