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1.1 The particle model

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Question 9
F

Substances P and Q are each heated from the solid state at the same pressure.

SubstanceMelting point (∘C^\circ\mathrm{C}∘C)Boiling point (∘C^\circ\mathrm{C}∘C)
P1882
Q82135

Both samples reach 82 ∘C82\,^\circ\mathrm{C}82∘C and stay at this temperature while they change state.

Which statement about the samples at this time is correct?

[1]
A

Both samples contain only liquid, because they are at the same temperature.

B

P contains liquid and gas; Q contains solid and liquid.

C

P contains solid and liquid; Q contains liquid and gas.

D

Both samples are boiling, because they are at the same temperature.

Markscheme

1.1 The particle model Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 The particle model

48 exam-style questions on OCR GCSE Chemistry 1.1 The particle model, covering 1.1.1 The particle model and changes of state and 1.1.2 Limitations of the particle model. Each one has a worked solution and a mark scheme showing where the marks go.

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