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8.2 Heat energy changes in chemical reactions

8.2 Heat energy changes in chemical reactions

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Question 3
F

Figure: Reaction profiles for exothermic and endothermic reactions image

The reaction-profile figure shows products below reactants. What type of reaction is shown?

[1]
A

Endothermic, because the products have less energy

B

Endothermic, because energy is taken in to reach the peak

C

Exothermic, because energy is given out overall

D

Exothermic, because the activation energy is small

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8.2 Heat energy changes in chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /8.2 Heat energy changes in chemical reactions

94 exam-style questions on Edexcel GCSE Chemistry 8.2 Heat energy changes in chemical reactions, covering 8.2.1 Exothermic and endothermic changes, 8.2.2 Bond breaking, bond making and overall energy change, 8.2.3 Calculating energy change from bond energies, and 8.2.4 Activation energy and reaction profiles. Each one has a worked solution and a mark scheme showing where the marks go.

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