A-LevelPhysicsIdeal gases9702/12 · Oct/Nov 2012 · Q251 Mark

What leads to the conclusion that the movement of molecules is random?

Aevaporation of water at room temperature

Bconduction of electricity in water

Cconvection currents in air

Dmotion of dust particles in air

✓ Correct answer

D: motion of dust particles in air

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Topic: Ideal gases, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, Oct/Nov 2012 Paper 1 Variant 2, question 25.

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