Question

what is an endothermic reaction.....???​

Answer 1

Explanation:

An endothermic process is any process with an increase in the enthalpy H of the system. In such a process, a closed system usually absorbs thermal energy from its surroundings, which is heat transfer into the system.

Answer 2

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Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the surroundings to form products. Physical processes can be endothermic as well – Ice cubes absorb heat energy from their surroundings and melt to form liquid water (no chemical bonds are broken or formed).