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5.1 Exothermic and endothermic reactions

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Question 4
F

A hand warmer contains iron powder. When the packet is opened the iron is oxidised and the hand warmer becomes hot. Which statement explains why the hand warmer becomes hot?

[1]
A

Oxidation takes in energy from the iron, so the iron transfers energy to the packet

B

Oxidation transfers energy to the surroundings, so the temperature of the packet increases

C

Oxidation takes in energy from the surroundings, so the temperature of the packet increases

D

Oxidation transfers energy to the iron, so the temperature of the surroundings decreases

Markscheme

5.1 Exothermic and endothermic reactions Questions

  1. GCSE
  2. /Chemistry
  3. /5.1 Exothermic and endothermic reactions

39 exam-style questions on AQA GCSE Chemistry 5.1 Exothermic and endothermic reactions, covering 5.1.1 Energy transfer during exothermic and endothermic reactions, 5.1.2 Reaction profiles, and 5.1.3 The energy change of reactions. Each one has a worked solution and a mark scheme showing where the marks go.

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