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2.3 Structure and bonding of carbon

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Question 13
F

Diamond melts at 3550 ∘C3550\ ^\circ\text{C}3550 ∘C. Methane melts at −182 ∘C-182\ ^\circ\text{C}−182 ∘C. Both substances contain only covalent bonds. Which statement explains this large difference?

[1]
A

The covalent bonds in methane are much weaker than the bonds in diamond.

B

Methane molecules are much smaller than the giant molecules found in diamond.

C

Melting methane only overcomes the weak forces between separate molecules.

D

Methane is a gas at room temperature but diamond is a solid at that point.

Markscheme

2.3 Structure and bonding of carbon Questions

  1. GCSE
  2. /Chemistry
  3. /2.3 Structure and bonding of carbon

40 exam-style questions on AQA GCSE Chemistry 2.3 Structure and bonding of carbon, covering 2.3.1 Diamond, 2.3.2 Graphite, and 2.3.3 Graphene and fullerenes. Each one has a worked solution and a mark scheme showing where the marks go.

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