Question

Evaporation of water is an example of ___ reaction.

Answer 1

Endothermic reactions are those where the system takes up heat from the surroundings. As a consequence, the reaction vessel becomes colder and its temperature decreases.
In other words, an endothermic reaction takes place when a great amount of energy is needed to break the existing bonds in the reactants.
This energy can be provided basically in the form of heat.