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SQA National 5 Chemistry Structure

Structure

This page covers the following topics:

1. Ionic compounds

Ionic compounds form giant crystalline ionic lattices, held together by the strong electrostatic forces of attraction between the oppositely charged ions. The stronger this attraction, the higher the melting point of the ionic compound. If the ions in the lattice are free to move then the compound can conduct electricity.

Ionic compounds

1

Order these ionic compounds in order of increasing melting point, CaO, KCl and MgFβ‚‚.

Order these ionic compounds in order of increasing melting point, CaO, KCl and MgFβ‚‚.

2

Lithium chloride is heated to above its melting point, will this substance conduct electricity?

Lithium chloride is heated to above its melting point, will this substance conduct electricity?

3

Explain the difference in melting point between these two ionic compounds.

Explain the difference in melting point between these two ionic compounds.

4

Are the ions in an ionic compound arranged randomly or crystalline?

Are the ions in an ionic compound arranged randomly or crystalline?

5

Aluminium chloride is dissolved in water, will this solution conduct electricity?

Aluminium chloride is dissolved in water, will this solution conduct electricity?

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