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5.1 Exothermic and endothermic reactions

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Question 6

A reaction is carried out in an insulated vessel. The temperature of the contents falls from 22 ∘C22\ ^\circ\text{C}22 ∘C to 16 ∘C16\ ^\circ\text{C}16 ∘C. Which statement is supported by this observation?

[1]
A

Energy is transferred from the reacting chemicals to the surroundings

B

No energy is transferred because the vessel is insulated

C

The temperature falls because energy is destroyed during the reaction

D

Energy is transferred from the surroundings to the reacting chemicals

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5.1 Exothermic and endothermic reactions Questions

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

85 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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