Learning objective
Explain that chemical reactions happen when particles collide.
Read the explanation, check the common trap, then practise with flashcards and questions.
At a glance
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Flashcards
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Topic
Rate of reaction
Subtopic
Collision theory and activation energy
Study support
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Quick explanation
Explain that chemical reactions happen when particles collide
- This point belongs to Rate of reaction, especially Collision theory and activation energy.
- You need to be able to explain that chemical reactions happen when particles collide.
- The key ideas to know are reactions, chemical, and when.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Collision theory and activation energy to exam-style questions, flashcards, and revision notes for Rate of reaction.
Quick student answer
How do you explain chemical reactions happen when particles collide?
Direct answer
In Chemistry, this page helps you answer questions about chemical reactions happen when particles collide within Rate of reaction. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are collision theory and activation energy.
Key terms
- collision theory: A theory that explains how chemical reactions occur when particles collide with sufficient energy. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.
- activation energy: The minimum energy required for particles to collide and react during a chemical reaction. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.
Common trap
Misunderstanding Collision Theory: Emphasize that for a reaction to occur, particles must collide with sufficient energy and the correct orientation.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Define rate of reaction as the speed at which reactants are used up or products are formed.
Calculating rates of reactions
- Calculate mean rate of reaction using quantity of reactant used divided by time taken. (MS 1a)
Calculating rates of reactions
- Calculate mean rate of reaction using quantity of product formed divided by time taken. (MS 1a)
Calculating rates of reactions
- Use units such as g/s, cm3/s or mol/s for rate of reaction calculations.
Calculating rates of reactions
- Interpret rate data from tables and graphs.
Calculating rates of reactions