O-LevelPhysicsThermal Physics5054/12 · May/June 2025 · Q151 Mark

The diagram shows four changes of state, W, X, Y and Z. [Figure 15.1 - Diagram showing changes between gas, liquid, solid] Which row gives the names of the four changes of state?

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Acondensation, boiling, freezing, melting

Bcondensation, boiling, melting, freezing

Cboiling, condensation, freezing, melting

Dboiling, condensation, melting, freezing

✓ Correct answer

D: boiling, condensation, melting, freezing

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Topic: Thermal Physics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2025 Paper 1 Variant 2, question 15.

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