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1.1 The particle model

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Question 15
F

Two sealed samples, R and S, are gently squashed. Neither sample leaks, reacts or changes state.

The volume of R stays almost the same. The volume of S decreases a lot.

Which conclusion is correct?

[1]
A

S is a gas; R must be a solid, because only solid particles are close together.

B

S is a liquid; R must be a solid, because liquid particles can move past one another.

C

S is a gas; R could be a solid or a liquid, because both have particles that are close together.

D

S is a gas; R must be a liquid, because solid particles cannot move at all.

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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