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1.1 The particle model

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Question 7
F

A liquid evaporates from an open dish. Tests show that the vapour is the same substance as the liquid. Which explanation is correct?

[1]
A

It is chemical because the mass left in the dish decreases

B

It is chemical because the particles become more widely spaced

C

It is physical because all the particles stop moving

D

It is physical because particles leave the liquid without becoming a new substance

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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