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8.2 Heat energy changes in chemical reactions

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Question 7
F

Which process is always exothermic?

[1]
A

Dissolving a solid in water

B

Breaking chemical bonds

C

Melting an ionic solid

D

Making chemical bonds

Markscheme

8.2 Heat energy changes in chemical reactions Questions

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

53 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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