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1.1 The particle model

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Question 36
F

Two colourless liquids are mixed and bubbles appear. Analysis shows that the bubbles contain substance Z, which was not present in either liquid. Why is this evidence of a chemical change?

[1]
A

Every change that produces bubbles is chemical

B

Gas particles always have a different identity from liquid particles

C

A new substance, Z, has formed

D

The particles in the liquids have stopped moving

Markscheme

1.1 The particle model Questions

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

93 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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