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

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Question 21

A technician measures some properties of compound S.

PropertyResult
Melting point820 ∘C820\ ^\circ\text{C}820 ∘C
Electrical conductivity at 20 ∘C20\ ^\circ\text{C}20 ∘Cless than 0.001 S m−10.001\ \text{S m}^{-1}0.001 S m−1
Electrical conductivity at 850 ∘C850\ ^\circ\text{C}850 ∘C170 S m−1170\ \text{S m}^{-1}170 S m−1
a.

Use the results to explain the bonding and structure of compound S.

[5]
b.

Compound S dissolves in water. Explain whether the solution conducts electricity.

[2]
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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