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2.5 Types of substance

2.5 Types of substance

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Question 19

Table 1 shows some physical properties of three substances, X, Y and Z.

Table 1

SubstanceMelting point (∘C^\circ\text{C}∘C)Electrical conductivity as a solidElectrical conductivity when molten
X782PoorGood
Y1083GoodGood
Z-7PoorPoor

Deduce, using the information in Table 1, the structure and bonding of substances X, Y and Z. Explain the properties of each substance in terms of its structure and bonding.

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Markscheme

2.5 Types of substance Questions

  1. GCSE
  2. /Chemistry
  3. /2.5 Types of substance

59 exam-style questions on Edexcel GCSE Chemistry 2.5 Types of substance, covering 2.5.1 Classifying substances by structure and bonding, 2.5.2 Properties of ionic and simple molecular substances, 2.5.3 Giant covalent structures: diamond and graphite, 2.5.4 Fullerenes, graphene and simple polymers, 2.5.5 Properties of metals and non-metals, and 2.5.6 Limitations of bonding models and representations. Each one has a worked solution and a mark scheme showing where the marks go.

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