Learning objective

Clarify that oxidation refers to the addition of oxygen, while reduction refers to the removal of oxygen.

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Exam focus

Cambridge IGCSE Combined ScienceChemical reactionsCore content

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Quick explanation

This point belongs to Redox, especially Redox outcomes.
You need to be able to clarify that oxidation refers to the addition of oxygen, while reduction refers to the removal of oxygen.
The key ideas to know are Define.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Define

Why it matters

This objective helps connect Redox outcomes to exam-style questions, flashcards, and revision notes for Redox.

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Flashcards10 linked cards

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Practice Questions7 linked questions

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Paper 3Theory (Core)3 marks

Description

In a chemical reaction, substance A reacts with oxygen to form substance B. Substance C is formed when substance D loses oxygen.

a
Analyse Explain the processes of oxidation and reduction in the context of the reaction described.
Your answer
Aim for approximately 3 distinct marking points.
[3]

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