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.
At a glance
5
Flashcards
7
Questions
Topic
Exothermic and endothermic reactions
Subtopic
Reaction profiles
Study support
Understand this objective
Short explanation
In the subtopic Reaction profiles, this learning objective focuses on define activation energy as the minimum energy particles need to react. It belongs to Exothermic and endothermic reactions in AQA GCSE Chemistry 8462 Unit 4.5 Energy changes, so the explanation must stay inside energy-transfer, reaction-profile, cell, fuel-cell, exothermic, endothermic, activation-energy or bond-energy context as appropriate. Approved keywords to use include activation energy. Activation energy. means the minimum energy particles need to react Avoid the mistake of students often confuse activation energy with the overall energy change of a reaction; instead, 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 For exam answers, remember that activation energy is the minimum energy required for particles to react. Make sure to define it clearly in your answers
Key concepts
Why it matters
This objective helps connect Reaction profiles to exam-style questions, flashcards, and revision notes for Exothermic and endothermic reactions.
Common mistakes
1 linked- 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.
Revision tools
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Flashcards5 linked cards
Flashcard 1 of 5
Practice Questions7 linked questions
Question 1 of 7
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Revision notestopic notes
Open the full topic revision notes when you are ready to review this objective in context.
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
