Cambridge IGCSE Chemistry practice

Paper 3 structured question: Redox

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Paper

Marks

Topic

Redox

Exam-style question

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Paper 3Theory (Core)1 marks

Redox reactions are important in various chemical processes.

Description

In redox reactions, one reactant is oxidized while another is reduced. This involves the transfer of oxygen between the reactants.

a
State What is meant by a redox reaction?
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[1]

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Paper 3Theory (Core)2 marks

Description

In this reaction, magnesium reacts with oxygen to form magnesium oxide. Identify the oxidation and reduction processes involved.

a
Identify Which substance is oxidized and which is reduced?
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Aim for approximately 2 distinct marking points.
[2]