Question 1
Learning objective
Distinguish energy change in a reversible reaction from reaction rate.
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
Aqa Gcse ChemistryThe rate and extent of chemical change
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Quick explanation
Distinguish energy change in a reversible reaction from reaction rate
- This point belongs to Reversible reactions and dynamic equilibrium, especially Energy changes and reversible reactions.
- You need to be able to distinguish energy change in a reversible reaction from reaction rate.
- The key ideas to know are reversible reaction.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
reversible reaction
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
Why does distinguish energy change in a reversible reaction from reaction rate?
Direct answer
In Chemistry, this page helps you answer questions about distinguish energy change in a reversible reaction from reaction rate 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 reversible reaction and reaction rate.
Key terms
- reversible reaction: A reaction in which products can react to form the original reactants. 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.
- reaction rate: The speed at which reactants are converted into products in 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
Mixing up energy change with reaction rate: Explain that energy change refers to the heat absorbed or released when bonds are broken or formed, while the reaction rate is the speed at which the forward and reverse reactions occur. Use the example of hydrated copper(II) sulfate: the forward reaction (CuSO₄·5H₂O → CuSO₄ + 5H₂O) is endothermic, but the rate at which water is removed depends on temperature and concentration, not on the heat of the reaction itself.
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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