Learning objective
Explain that if one direction of a reversible reaction is exothermic, the opposite direction is endothermic.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Reversible reactions and dynamic equilibrium
Subtopic
Energy changes and reversible reactions
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Understand this objective
Quick explanation
Explain that if one direction of a reversible reaction is exothermic, the opposite direction is endothermic
- This point belongs to Reversible reactions and dynamic equilibrium, especially Energy changes and reversible reactions.
- You need to be able to explain that if one direction of a reversible reaction is exothermic, the opposite direction is endothermic.
- The key ideas to know are endothermic, exothermic, and reversible reaction.
- 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 Energy changes and reversible reactions to exam-style questions, flashcards, and revision notes for Reversible reactions and dynamic equilibrium.
Quick student answer
How do you explain if one direction of a reversible reaction is exothermic, the opposite direction is endothermic?
Direct answer
In Chemistry, this page helps you answer questions about if one direction of a reversible reaction is exothermic, the opposite direction is endothermic within Reversible reactions and dynamic equilibrium. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are exothermic reaction and endothermic reaction.
Key terms
- exothermic reaction: A reaction that releases energy to the surroundings, usually in the form of heat. 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.
- endothermic reaction: A reaction that absorbs energy from the surroundings, usually in the form of heat. 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
Confusing Exothermic and Endothermic: To fix this, remember that if the forward reaction releases energy (exothermic), the reverse reaction must absorb energy (endothermic), and vice versa.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Define a reversible reaction as a reaction in which products can react to make the original reactants.
Reversible reactions
- Identify the forward reaction and reverse reaction in a reversible reaction.
Reversible reactions
- Use the reversible reaction symbol in equations.
Reversible reactions
- Describe examples of reversible reactions such as hydrated copper sulfate and anhydrous copper sulfate.
Reversible reactions
- Describe thermal decomposition of ammonium chloride as a reversible reaction example.
Reversible reactions