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Cambridge IGCSE Chemistry practice

Paper 4 structured question: Giant covalent structures

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4

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Giant covalent structures

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Paper 4Theory (Extended)4 marks

Discussing the structural similarities of diamond and silicon dioxide.

Description

Structural Similarities

Diamond consists of carbon atoms arranged in a tetrahedral structure, while silicon dioxide consists of silicon and oxygen atoms also arranged tetrahedrally.

  1. a

    Discuss the similarities in the structures of diamond and silicon dioxide.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 4 structured question: Giant covalent structures

Paper 4Theory (Extended)1 marks

Description

Properties of Diamond and Silicon Dioxide

Both diamond and silicon dioxide are known for their hardness and high melting points. They are both covalent network structures.

  1. a

    State one similarity in the properties of diamond and silicon dioxide.

    Aim for approximately 1 distinct marking point.

    [1]