Learning objective

Explain how the rate of a reaction is influenced by factors such as the concentration of solutions, pressure of gases, surface area of solids, temperature, and the presence of a catalyst or enzyme.

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Exam focus

Cambridge IGCSE ChemistryChemical reactionsCore content

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Quick explanation

This point belongs to Rate of reaction, especially Rate of reaction outcomes.
You need to be able to explain how the rate of a reaction is influenced by factors such as the concentration of solutions, pressure of gases, surface area of solids, temperature, and the presence of a catalyst or enzyme.
The key ideas to know are Describe, Explain, and Discuss.
Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplainDiscuss

Why it matters

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

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Practice Questions7 linked questions

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Paper 3Theory (Core)1 marks

Description

A reaction between two chemicals is observed at different temperatures. The rate of reaction is measured in seconds for each temperature setting.

a
State the trend observed in the rate of reaction as temperature increases.
Your answer
Aim for approximately 1 distinct marking point.
[1]

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