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6 April, 22:21

Which event is endothermic?

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  1. 6 April, 22:36
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    Physical processes:

    -Evaporation

    -Melting

    -Dissolving of some ionic compounds

    (eg. ammonium chloride, potassium chloride and hydrated copper (II) sulfate)

    Chemical reaction:

    -Photosynthesis

    -Action of light on silver bromide in photographic film

    -Thermal decomposition

    (eg. heating of calcium carbonate to produce calcium oxide and carbon dioxide)
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