Question

define endothermic reaction . give the example​

Answer 1

Answer:

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).

Explanation:

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Answer 2

Answer:

An endothermic reaction is any process with and increase in the enthalpy H(or internal energy U) of the system. In such a process a close system usually absorbs thermal energy from its surroundings,which is heat transfer into the system.

Explanation:

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