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2.3 Properties of materials

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Question 11

The substances J, K and L are simple molecular substances made from the same two elements.

SubstanceNumber of atoms in one moleculeBoiling point / ∘C^\circ\mathrm{C}∘C
J11-42
K2398
L35196
a.

Explain the pattern in boiling point shown by the data.

[3]
b.

Substance M is another simple molecular substance made from the same two elements. One molecule of M contains 29 atoms.

Predict the position of the boiling point of M relative to the boiling points of J, K and L. Explain your answer.

[2]
Markscheme

2.3 Properties of materials Questions

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

122 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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