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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Alkenes

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Alkenes

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Paper 4Theory (Extended)4 marks

Cracking is a vital process in the production of fuels and chemicals.

Description

Importance of Cracking

Cracking allows for the conversion of larger hydrocarbons into smaller, more useful molecules.

  1. a

    Discuss the advantages of using cracking in the petrochemical industry.

    Aim for approximately 4 distinct marking points.

    [4]

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Paper 4 structured question: Alkenes

Paper 4Theory (Extended)4 marks

Description

Cracking Process

Cracking involves breaking down larger alkane molecules into smaller alkenes and hydrogen gas using high temperatures and a catalyst.

  1. a

    Explain the process of cracking and its significance in producing alkenes and hydrogen.

    Aim for approximately 4 distinct marking points.

    [4]