Cambridge IGCSE Chemistry practice

Paper 3 structured question: Alkenes

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Paper

Marks

Topic

Alkenes

Exam-style question

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Paper 3Theory (Core)1 marks

The process of cracking is used in the petrochemical industry.

Description

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

a
State the products of the cracking process.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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Paper 3Theory (Core)3 marks

Description

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

a
Describe the conditions required for the cracking process.
Your answer
Aim for approximately 3 distinct marking points.
[3]