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

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Question 15

A temperature probe operates at 100 ∘C100\ ^\circ\text{C}100 ∘C. A support for the probe must remain solid at this temperature.

SubstanceStructureMelting point in ∘C^\circ\text{C}∘C
Pgiant ionic770
Qsimple molecular45

Explain which substance should be used for the support and why its melting point is higher than the melting point of the other substance.

[4]
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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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