Learning objective
Define activation energy as the minimum energy particles need to react.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Exothermic and endothermic reactions
Subtopic
Reaction profiles
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Understand this objective
Quick explanation
Define activation energy as the minimum energy particles need to react
- This point belongs to Exothermic and endothermic reactions, especially Reaction profiles.
- You need to be able to define activation energy as the minimum energy particles need to react.
- The key ideas to know are activation energy.
- 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 Reaction profiles to exam-style questions, flashcards, and revision notes for Exothermic and endothermic reactions.
Quick student answer
What is activation energy?
Direct answer
In Chemistry, this page helps you answer questions about activation energy within Exothermic and endothermic reactions. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are Activation energy and Reaction profile.
Key terms
- Activation energy: The minimum energy particles need to react. In Reaction profiles, this term is used specifically to support the learning objective: define activation energy as the minimum energy particles need to react.
- Reaction profile: A graphical representation showing the energy changes during a chemical reaction. In Reaction profiles, this term is used specifically to support the learning objective: define activation energy as the minimum energy particles need to react.
Common trap
Confusing Activation Energy: Remember that activation energy is the minimum energy required for particles to react, while overall energy change refers to the difference in energy between reactants and products.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- State that energy is conserved in chemical reactions.
Energy transfer during exothermic and endothermic reactions
- Explain that a reaction transferring energy to the surroundings leaves products with less energy than the reactants by the amount transferred.
Energy transfer during exothermic and endothermic reactions
- Define an exothermic reaction as one that transfers energy to the surroundings.
Energy transfer during exothermic and endothermic reactions
- Explain that the temperature of the surroundings increases during an exothermic reaction.
Energy transfer during exothermic and endothermic reactions
- Identify combustion, many oxidation reactions and neutralisation as examples of exothermic reactions.
Energy transfer during exothermic and endothermic reactions