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Discuss how factors like concentration, pressure, surface area, temperature, and catalysts affect reaction rates, using collision theory as a basis.

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Cambridge IGCSE ChemistryChemical reactionsSupplement content

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Discuss how factors like concentration, pressure, surface area, temperature, and catalysts affect reaction rates, using collision theory as a basis

This point belongs to Rate of reaction, especially Rate of reaction outcomes.
You need to be able to discuss how factors like concentration, pressure, surface area, temperature, and catalysts affect reaction rates, using collision theory as a basis.
The key ideas to know are Describe, Explain, and Discuss.
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DescribeExplainDiscuss

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Paper 4 structured question: Rate of reaction

Paper 4Theory (Extended)1 marks

Description

Temperature and Reaction Rates

When the temperature of a reaction mixture is increased, the kinetic energy of the particles also increases. This leads to more frequent and more energetic collisions between reactant particles.

a
State the effect of increasing temperature on the rate of a chemical reaction.
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Related learning objectives

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.
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 practical approaches to measure the rate of a reaction, such as monitoring changes in mass or gas production.
Rate of reaction outcomes
Analyze data, including graphical representations, from experiments related to the rate of reaction.
Rate of reaction outcomes
Explain collision theory by discussing factors such as particle density, collision frequency, kinetic energy, and activation energy.
Rate of reaction outcomes

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