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22 July, 07:50

Most chemical reactions involve the evolution or absorption of heat energy. True or False

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  1. 22 July, 07:52
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    True

    Explanation:

    The majority of the reactions happened with a flow of heat. When there's no heat, the reaction is adiabatic.

    For no adiabatic reactions, the heat can be released (evolution) by the system, so the reaction will be exothermic, or absorbed by the system (absorption), then the reaction is called endothermic.
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