Energy ChangesHigh Exam FrequencyAQA

Reaction Profiles

Revise Reaction Profiles in Energy Changes for GCSE Chemistry with 28 exam-style questions and 15 flashcards. This is a high-frequency exam topic, so students should expect to explain it clearly under timed conditions.

Sample Flashcards

What is activation energy?
The minimum energy particles need to react when they collide
What does the y-axis show on a reaction profile?
Energy

Sample Questions

What does activation energy represent on a reaction profile?

  • A. The minimum energy particles need to react
  • B. The total energy released during the reaction
  • C. The energy stored in the reactants
  • D. The difference in energy between products and reactants
1 markfoundation

Explain how a catalyst affects the activation energy shown on a reaction profile. [2 marks]

2 marksstandard

28

exam-style questions

15

revision flashcards

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