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2.3 Properties of materials

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Question 11
F

Sodium chloride melts at 801 ∘C801\,^\circ\mathrm{C}801∘C. Chlorine melts at −101 ∘C-101\,^\circ\mathrm{C}−101∘C.

Which statement explains the difference in melting points?

[1]
A

Sodium chloride has strong attraction between ions; chlorine has weak intermolecular forces.

B

Sodium chloride has strong covalent bonds; chlorine has weak covalent bonds.

C

Sodium chloride has strong intermolecular forces; chlorine has weak ionic bonds.

D

Sodium chloride has delocalised electrons; chlorine has no electrons free to move.

Markscheme

2.3 Properties of materials Questions

  1. GCSE
  2. /Chemistry
  3. /2.3 Properties of materials

60 exam-style questions on OCR GCSE Chemistry 2.3 Properties of materials, covering 2.3.1 Carbon bonding and the variety of organic compounds, 2.3.2 Diamond, graphite, fullerenes and graphene, 2.3.3 Bond strength, changes of state and predicting states, 2.3.4 Bulk properties and types of bonding, and 2.3.5 Nanoparticles: scale, surface area, uses and risks. Each one has a worked solution and a mark scheme showing where the marks go.

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