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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Ions and ionic bonds

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Ions and ionic bonds

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Paper 4Theory (Extended)3 marks

Ionic compounds are known for their unique structures and properties.

Description

Structure of Sodium Chloride

Sodium chloride (NaCl) consists of sodium ions (Na+) and chloride ions (Cl-) arranged in a three-dimensional lattice.

  1. a

    Describe the giant lattice structure of sodium chloride.

    Aim for approximately 3 distinct marking points.

    [3]

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Paper 4 structured question: Ions and ionic bonds

Paper 4Theory (Extended)2 marks

Description

Properties of Ionic Compounds

Ionic compounds typically have high melting and boiling points and conduct electricity when dissolved in water.

  1. a

    Explain why ionic compounds have high melting and boiling points.

    Aim for approximately 2 distinct marking points.

    [2]