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Energy changes: exothermic and endothermic reactions
Practice Questions

44 AQA GCSE Chemistry questions on Energy changes: exothermic and endothermic reactions, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Energy changes: exothermic and endothermic reactions

Question 1 · 1 mark · Difficulty 1/3

In an exothermic reaction, which of the following correctly describes the energy change that occurs?

  1. Energy is transferred from the reaction to the surroundings
  2. Energy is transferred from the surroundings to the reaction
  3. The products have more energy than the reactants
  4. The temperature of the surroundings decreases
Show answer & explanation
✓ Answer: A — Energy is transferred from the reaction to the surroundings
The temperature of the surroundings therefore rises, and the products are left at a lower energy level than the reactants. A transfer from the surroundings into the reaction, products holding more energy than the reactants, and a fall in the temperature of the surroundings all describe endothermic reactions.
Question 2 · 1 mark · Difficulty 1/3

On a reaction profile diagram for an endothermic reaction, which statement is correct?

  1. The products are at a higher energy level than the reactants
  2. The activation energy is always larger than in exothermic reactions
  3. The reactants and products are at the same energy level
  4. The products are at a lower energy level than the reactants
Show answer & explanation
✓ Answer: A — The products are at a higher energy level than the reactants
Energy has been absorbed from the surroundings, so the products are drawn above the reactants on the profile. Products drawn lower would show an exothermic reaction, equal levels would mean no overall energy change, and the size of the activation energy is not determined by whether a reaction is exothermic or endothermic.
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AQA GCSE Chemistry: Energy changes: exothermic and endothermic reactions FAQ

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Are the Energy changes: exothermic and endothermic reactions questions aligned to the official AQA GCSE Chemistry syllabus?
Every question is written against the published AQA GCSE Chemistry specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real AQA paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from AQA.
How is Energy changes: exothermic and endothermic reactions typically tested on AQA GCSE Chemistry papers?
Energy changes: exothermic and endothermic reactions appears across multiple question types on real AQA GCSE Chemistry papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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