Cambridge IGCSE Combined Science practice

Paper 4 structured question: Electrolysis

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

At a glance

Paper

Marks

Topic

Electrolysis

Exam-style question

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Paper 4Theory (Extended)3 marks

Electrolysis is a key process in chemistry used for various applications.

Description

In electrolysis, an electric current is passed through an electrolyte, causing chemical reactions at the electrodes.

a
Explain the products formed at the cathode and anode during electrolysis.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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Paper 4Theory (Extended)4 marks

Description

Electrolysis involves the breakdown of compounds using electrical energy, leading to the formation of different products at the electrodes.

a
Describe the role of the cathode and anode in electrolysis.
Your answer
Aim for approximately 4 distinct marking points.
[4]