Figure 1: Reaction profiles for exothermic and endothermic reactions, showing activation energy and ฮH
This diagram covers Reaction Profile Diagrams 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 2 of 13 in this topic. Focus on the labels, the relationships between parts, and the explanation that turns the diagram into an exam-ready answer.
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
What does the y-axis show on a reaction profile?
Energy
What is activation energy?
The minimum energy particles need to react when they collide