Question

what does one mean by exothermic and endothermic reaction give example

Answer 1

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Reactions in which Energy is released are called Exothermic Reactions

eg.) => Mg + 02 = MgO

Eg.) => Combustion , Respiration


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Reactions in which Energy is consumed are called Endothermic Reactions .

eg.) => C + S -------> CS

eg.) => CaCO3 ------> CaO + O2


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Answer 2

Exothermic reactions

These are reactions that transfer energy to the surroundings.Some examples of exothermic reactions are:

●burning
●neutralisation reactions between acids and alkalis
●the reaction between water and calcium oxide

Endothermic reactions

These are reactions that take in energy from the surroundings.Some examples of endothermic reactions are:

●electrolysis
●the reaction between ethanoic acid and sodium carbonate