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Cambridge IGCSE Combined Science practice

Paper 4 structured question: Alkenes

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4

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4

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Topic

Alkenes

Exam-style question

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Paper 4Theory (Extended)4 marks

The process of cracking is used in the petrochemical industry to convert larger hydrocarbons into smaller, more useful molecules.

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]

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Paper 4 structured question: Alkenes

Paper 4Theory (Extended)4 marks

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]