Exothermic vs Endothermic Reaction Profiles
This comparison covers Exothermic vs Endothermic Reaction Profiles within Reaction Profiles for GCSE Chemistry. Revise Reaction Profiles in Energy Changes for GCSE Chemistry with 28 exam-style questions and 15 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 6 of 13 in this topic. Use this comparison to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 6 of 13
Practice
28 questions
Recall
15 flashcards
⚖️ Exothermic vs Endothermic Reaction Profiles
| Feature | Exothermic | Endothermic |
|---|---|---|
| Products vs Reactants | Products LOWER | Products HIGHER |
| ΔH sign | Negative (−) | Positive (+) |
| Temperature change | Surroundings get HOTTER | Surroundings get COLDER |
| Energy transfer direction | Reaction → Surroundings | Surroundings → Reaction |
| Effect of catalyst | Lower peak, same ΔH | Lower peak, same ΔH |
Keep building this topic
Read this section alongside the surrounding pages in Reaction Profiles. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Reaction Profiles
What does activation energy represent on a reaction profile?
Explain how a catalyst affects the activation energy shown on a reaction profile. [2 marks]
Quick Recall Flashcards
28 questions on Reaction Profiles — practise free
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