Exothermic & Endothermic Reactions

Exothermic & Endothermic Reactions Quiz

Spec 3.9.1 · Oxford AQA IGCSE Chemistry: Quiz

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5 questions, one answer each

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  1. 1. What happens to the temperature of the surroundings in an exothermic reaction?

    • A. Increases
    • B. Decreases
    • C. Stays the same
    • D. Becomes zero

  2. 2. Which of these is an example of an endothermic reaction?

    • A. Combustion
    • B. Neutralisation
    • C. Thermal decomposition
    • D. Oxidation

  3. 3. What sign does ΔH have for a reaction that releases energy to the surroundings?

    • A. Positive
    • B. Zero
    • C. Negative
    • D. Undefined

  4. 4. A student mixes two chemicals and the test tube feels colder afterwards. What type of reaction has occurred?

    • A. Exothermic
    • B. Endothermic
    • C. Catalytic
    • D. Reversible only

  5. 5. Which statement correctly links reaction type to energy transfer?

    • A. Exothermic reactions take in energy, so ΔH is positive
    • B. Endothermic reactions release energy, so ΔH is negative
    • C. Exothermic reactions release energy to the surroundings, so ΔH is negative
    • D. Endothermic reactions release energy, so the surroundings warm up

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