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HomeAQA GCSE ChemistryEnergy changes: exothermic and endothermic reactions
AQA · GCSE · Chemistry

Energy changes: exothermic and endothermic reactions
Practice Questions

20 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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Question 1 · 1 mark · Difficulty 1/3

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

  1. A) Energy is transferred from the surroundings to the reaction
  2. B) Energy is transferred from the reaction to the surroundings
  3. C) The temperature of the surroundings decreases
  4. D) The bond energies of reactants are lower than those of products
Show answer & explanation
✓ Answer: BB) Energy is transferred from the reaction to the surroundings
In an exothermic reaction, energy is released from the reacting system into the surroundings, causing the temperature of the surroundings to rise. Options A and C describe endothermic reactions, and option D is incorrect because exothermic reactions have stronger bonds in products than reactants.
Question 2 · 1 mark · Difficulty 2/3

A student dissolves ammonium nitrate in water and measures the temperature. The temperature drops from 22 °C to 14 °C. What type of reaction is this and why?

  1. A) Exothermic, because the temperature of the solution decreased
  2. B) Endothermic, because energy was transferred from the surroundings to the reaction
  3. C) Exothermic, because energy was released from the surroundings
  4. D) Endothermic, because the dissolving produced a new substance
Show answer & explanation
✓ Answer: BB) Endothermic, because energy was transferred from the surroundings to the reaction
A decrease in temperature of the solution indicates that energy has been absorbed from the surroundings by the reaction, making it endothermic. Option A incorrectly classifies the reaction type, and option D gives an irrelevant reason.
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AQA GCSE Chemistry: Energy changes: exothermic and endothermic reactions FAQ

How many AQA GCSE Chemistry questions on Energy changes: exothermic and endothermic reactions are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Energy changes: exothermic and endothermic reactions for AQA GCSE Chemistry, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real AQA paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for AQA GCSE students preparing for Chemistry?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Energy changes: exothermic and endothermic reactions practice with other Chemistry topics or even switch to a totally different AQA subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
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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