Give an example to show change in temperature during chemical reaction
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If two substances react and the temperature of the mixture decreases, the reaction is endothermic. If two substances react and the temperature of the mixture increases, the reaction is exothermic. A chemical reaction involves the breaking of bonds in the reactants and the forming of bonds in the products.
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Answer:CaO+H2O->Ca(OH)2+heat energy
Explanation:
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