Edexcel IGCSE Chemistry · Spec 3.9-3.11
Rates of Reaction: Factors & Collision Theory
The factors that affect rate of reaction, explained by collision theory.
Chemistry revision video
Rates of Reaction: Factors & Collision Theory
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Spec 3.9-3.11
What you need to know
- Explain reactions using collision theory
- List the factors that affect the rate
- Explain why each factor changes the rate
Active recall
Quick check
Answer each question before opening the answer.
Name four factors that affect the rate of a reaction.
Temperature, concentration (or pressure for gases), surface area, and use of a catalyst.
According to collision theory, what is needed for a reaction to happen?
Particles must collide with enough energy (the activation energy) and in the correct orientation.
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