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3.2 Energetics

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Question 15
H

Which statement explains why a reaction is exothermic?

[1]
A

More bonds are made in the products than are broken in the reactants.

B

More energy is released making bonds than is taken in breaking bonds.

C

Energy is released when the bonds in the reactants are broken.

D

Less energy is released making bonds than is taken in breaking bonds.

Markscheme

3.2 Energetics Questions

  1. GCSE
  2. /Chemistry
  3. /3.2 Energetics

51 exam-style questions on OCR GCSE Chemistry 3.2 Energetics, covering 3.2.1 Exothermic and endothermic reactions and reaction profiles and 3.2.2 Calculating energy change from bond energies. Each one has a worked solution and a mark scheme showing where the marks go.

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