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2.2 How bonding and structure are related to the properties of substances

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Question 10

A sample of solid calcium chloride is heated until it melts. The molten calcium chloride conducts electricity.

Which statement explains why the calcium chloride conducts electricity after melting?

[1]
A

Calcium atoms and chlorine atoms are free to move and carry charge

B

Calcium ions and chloride ions are free to move and carry charge

C

Shared pairs of electrons are free to move and carry charge

D

Calcium chloride molecules are free to move and carry charge

Markscheme

2.2 How bonding and structure are related to the properties of substances Questions

  1. GCSE
  2. /Chemistry
  3. /2.2 How bonding and structure are related to the properties of substances

84 exam-style questions on AQA GCSE Chemistry 2.2 How bonding and structure are related to the properties of substances, covering 2.2.1a The three states of matter, 2.2.1b Limitations of the simple particle model, 2.2.2 State symbols in chemical equations, 2.2.3 Properties of ionic compounds, 2.2.4 Properties of small molecules, 2.2.5 Polymers, 2.2.6 Giant covalent structures, 2.2.7 Properties of metals and alloys, and 2.2.8 Metals as conductors. Each one has a worked solution and a mark scheme showing where the marks go.

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