Cambridge IGCSE Combined Science practice

Paper 4 structured question: Alkenes

Try the question first, then check the answer and practise the same topic again.

At a glance

Paper

Marks

Topic

Alkenes

Exam-style question

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Paper 4Theory (Extended)2 marks

Addition reactions of alkenes

Description

Alkenes can undergo addition reactions with bromine, hydrogen, and steam.

a
Describe the reaction of alkenes with bromine and the significance of this reaction.
Your answer
Aim for approximately 2 distinct marking points.
[2]

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Paper 4Theory (Extended)3 marks

Description

Alkenes can react with hydrogen and steam in the presence of catalysts.

a
Explain the process of hydrogenation of alkenes and its industrial significance.
Your answer
Aim for approximately 3 distinct marking points.
[3]