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6 June, 13:42

In a chemical cold pack, two substances are kept separate by a divider. when the divider is broken, the substances mix and absorb heat from the surroundings. the chemical cold pack feels cold.

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  1. 6 June, 14:01
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    Answer;

    -This is an example of endothermic reaction;

    Explanation;

    -An endothermic reaction is a chemical reaction accompanied by the absorption of heat. Examples: Dry ice subliming (changing from a solid directly to a gas). On the other hand, an exothermic reaction is a chemical reaction that releases energy by light or heat. The reactants have more energy than the products
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