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3.1 Changes of state and the particle model

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Question 10
F

Water in a puddle turns into water vapour at 15 ∘C15\ ^\circ\text{C}15 ∘C, which is far below the boiling point of water. What is the name of this change of state, and why can it happen below 100 ∘C100\ ^\circ\text{C}100 ∘C?

[1]
A

Boiling, because the water is in contact with the air above it

B

Evaporating, because all of the water particles have the same energy

C

Evaporating, because the fastest particles escape from the surface

D

Boiling, because bubbles of vapour form throughout the liquid water

Markscheme

3.1 Changes of state and the particle model Questions

  1. GCSE
  2. /Physics
  3. /3.1 Changes of state and the particle model

40 exam-style questions on AQA GCSE Physics 3.1 Changes of state and the particle model, covering 3.1.1 Density of materials and 3.1.2 Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.

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