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Rate of reaction
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.
8
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80
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56
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90 min
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CambridgeIGCSEChemistryChemical reactions
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Rate of reaction outcomes8 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.
- Recognize that a catalyst speeds up a reaction and remains unchanged after the reaction is complete.
- Outline practical approaches to measure the rate of a reaction, such as monitoring changes in mass or gas production.
- Analyze data, including graphical representations, from experiments related to the rate of reaction.
- Explain collision theory by discussing factors such as particle density, collision frequency, kinetic energy, and activation energy.
- Discuss how factors like concentration, pressure, surface area, temperature, and catalysts affect reaction rates, using collision theory as a basis.
- Acknowledge that a catalyst lowers the activation energy required for a reaction to occur.
- Assess various practical methods for measuring the rate of a reaction, including changes in mass and gas production.
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