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    Chemistry A-Level

    bond breaking is endothermic

    What bond breaking is endothermic means in Chemistry A-Level, as defined for AQA.

    Definition of bond breaking is endothermic

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    Reference: AQA

    Breaking bonds takes energy in, and if bond breaking dominates, energy is drawn from the surroundings and the mixture cools.
    AQA · Enthalpy change (study guide)

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