Learning objective
Use reaction profiles to identify whether a reaction is exothermic or endothermic.
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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Quick explanation
Use reaction profiles to identify whether a reaction is exothermic or endothermic
- This point belongs to Exothermic and endothermic reactions, especially Reaction profiles.
- You need to be able to use reaction profiles to identify whether a reaction is exothermic or endothermic.
- The key ideas to know are endothermic, reaction profile, and exothermic.
- 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
How do you use reaction profiles to identify whether a reaction is exothermic or endothermic in exam questions?
Direct answer
In Chemistry, this page helps you answer questions about reaction profiles to identify whether a reaction is exothermic or endothermic 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 Exothermic reaction and Endothermic reaction.
Key terms
- Exothermic reaction: A reaction that transfers energy to the surroundings, resulting in an increase in the temperature of the surroundings.
- Endothermic reaction: A reaction that takes in energy from the surroundings, resulting in a decrease in the temperature of the surroundings.
Common trap
Misidentifying the overall energy change on a reaction profile: Explain that the activation energy is the height of the peak above the reactant baseline, while the overall energy change is the difference between the reactant and product baselines; a downward drop indicates an exothermic reaction and an upward rise indicates an endothermic reaction.
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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