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)4 marks

Understanding electrolysis is essential for applications in industry and research.

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]

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Paper 4Theory (Extended)3 marks

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]