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

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Question 9
F

Silicon dioxide has a giant covalent structure. Silicon dioxide melts at 1710 ∘C1710\ ^\circ\text{C}1710 ∘C.

a.

Explain why silicon dioxide has a very high melting point.

[3]
b.

Name one other substance that has a giant covalent structure.

[1]
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

42 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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