O-LevelPhysicsThermal PhysicsOct/Nov 2025Paper 1 Q141 Mark

A student heats a substance in which the particles are in fixed positions and vibrate. After a short period of heating, the particles start to flow past each other, but the forces between the particles remain strong. What has happened to the substance?

Q: What is the correct answer to this O-Level Physics question?

The correct answer is D: It has melted..

Q: What topic does this question test?

This question tests Thermal Physics in O-Level Physics (syllabus code 5054). It is worth 1 mark.

AIt has condensed.

BIt has evaporated.

CIt has frozen.

DIt has melted.

✓ Correct Answer

The correct answer is D: It has melted.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This O-Level Physics Question

Topic

This multiple-choice question tests Thermal Physics in O-Level Physics (syllabus code 5054). It is worth 1 mark.

Source

This question appeared in the Cambridge O-Level Physics Oct/Nov 2025 examination, Paper 1 Variant 1.

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