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Discuss how factors such as concentration, surface area, temperature, and catalysts affect the rate of reaction through the principles of collision theory.

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Cambridge IGCSE Combined ScienceChemical reactionsSupplement content

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Discuss how factors such as concentration, surface area, temperature, and catalysts affect the rate of reaction through the principles of collision theory

This point belongs to Rate of reaction, especially Rate of reaction outcomes.
You need to be able to discuss how factors such as concentration, surface area, temperature, and catalysts affect the rate of reaction through the principles of collision theory.
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ExplainDiscussJustify

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Paper 4 structured question: Rate of reaction

Paper 4Theory (Extended)3 marks

Description

Reaction of Hydrochloric Acid and Magnesium

When magnesium reacts with hydrochloric acid, hydrogen gas is produced. The rate of this reaction can be affected by various factors such as concentration and temperature.

a
Analyse Discuss how increasing the concentration of hydrochloric acid affects the rate of reaction with magnesium.
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Aim for approximately 3 distinct marking points.
[3]

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Related learning objectives

Explain how the rate of a reaction is influenced by factors such as the concentration of solutions, the surface area of solids, the temperature, and the presence of a catalyst.
Rate of reaction outcomes
Recognize that a catalyst speeds up a reaction and remains unchanged after the reaction is complete.
Rate of reaction outcomes
Outline methods for conducting experiments to measure the rate of a reaction, including observing changes in mass or gas production.
Rate of reaction outcomes
Analyze data from experiments on the rate of reaction, including interpreting graphs.
Rate of reaction outcomes
Describe the key concepts of collision theory, including particle density, collision frequency, kinetic energy, and activation energy.
Rate of reaction outcomes

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