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    Chemistry GCSE

    Exothermic and endothermic processes

    What Exothermic and endothermic processes means in Chemistry GCSE, as defined for AQA.

    Definition of Exothermic and endothermic processes

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    Reference: AQA

    These are underpinned by the principle of conservation of energy, with energy transferred between the chemical store of reactants or products and the thermal store of the surroundings.
    AQA · Energy transfer during exothermic and endothermic reactions (study guide)

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