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1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

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Question 23
F72%

Why is crystallisation used, rather than simple distillation, to obtain copper sulfate crystals from copper sulfate solution?

[1]
A

Distillation would make the copper sulfate decompose into new substances

B

Distillation separates only substances that have different boiling points

C

Crystallisation is the only process that does not need any heating at all

D

Crystallisation keeps the copper sulfate, and distillation keeps the water

Markscheme

1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Questions

  1. GCSE
  2. /Chemistry
  3. /1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

40 exam-style questions on AQA GCSE Chemistry 1.1 A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, covering 1.1.1a Atoms, elements and compounds, 1.1.1b Half equations and ionic equations, 1.1.2 Mixtures, 1.1.3 The development of the model of the atom (common content with physics), 1.1.4 Relative electrical charges of subatomic particles, 1.1.5 Size and mass of atoms, 1.1.6 Relative atomic mass, and 1.1.7 Electronic structure. Each one has a worked solution and a mark scheme showing where the marks go.

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