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GCSE Combined Science (AQA Trilogy) — Chemistry 5.5 Energy changes: 49 practice questions

49 original GCSE Combined Science (AQA Trilogy) questions on Chemistry 5.5 Energy changes, each with an explanation and its source. Topics: 5.5.1.1 Energy transfer during exothermic and endothermic reactions, 5.5.1.2 Reaction profiles, 5.5.1.3 Bond energy calculations, 5.5.1.3 The energy change of reactions, Working scientifically: precision and accuracy. One free sample is below; the rest of the questions are available with a paid plan.

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One Chemistry 5.5 Energy changes question with explanations

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Q1 5.5 Energy changes

During a reaction, the temperature of the reaction mixture and its surroundings rises. Which energy change is most consistent with this observation?

  1. The reaction is exothermic and transfers energy to the surroundings.
  2. The reaction is endothermic and absorbs energy from the surroundings.
  3. The reaction has no energy transfer.
  4. The temperature rise proves that no bonds were broken.
Show the answer and explanation

Answer: A. An exothermic reaction transfers energy to the surroundings, so their temperature can rise.

Sources: AQA · AQA

That's the free sample. The rest of the questions are available with a paid plan.

That's the free sample. The rest is available with a plan.

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Topics in Chemistry 5.5 Energy changes

  • 5.5.1.1 Energy transfer during exothermic and endothermic reactions 7
  • 5.5.1.2 Reaction profiles 4
  • 5.5.1.3 Bond energy calculations 1
  • 5.5.1.3 The energy change of reactions 3
  • Working scientifically: precision and accuracy 1

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Are these GCSE Combined Science Chemistry 5.5 Energy changes questions free?

The sample question on this page is free to read, with the answer and sources. The full set of 49 Chemistry 5.5 Energy changes questions is in the paid plans.

Are these the exam body's own questions?

No. Every question is original and written by Sakakikaen Co., Ltd. examplat is not affiliated with or endorsed by the organisation that runs GCSE Combined Science (AQA Trilogy). Check its website for the current syllabus.