May/June 2026 Paper 21

2026 · 40 questions · 40 parts · 40 marks

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2Particle Model Changes StateEasy1 mark
A solid lump of tin is heated until it melts. Which statements describe what happens when solid tin melts?
  1. 1
    The atoms of tin move further apart.
  2. 2
    The atoms of tin lose thermal energy to the surroundings.
  3. 3
    The atoms of tin gain thermal energy from the surroundings.
  4. 4
    The temperature of the tin increases.