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

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Question 13

A student dissolves solid potassium iodide in water. The solution conducts electricity.

Which statement explains why the solution conducts electricity?

[1]
A

The water molecules are free to move and carry the charge

B

The potassium ions and iodide ions are free to move and carry the charge

C

The potassium iodide molecules are free to move and carry the charge

D

Electrons released from the iodide ions are free to move and carry the 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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