Evaporation is a process that requires energy to occur. evaporation is a(n) _ reaction.

Evaporation is a process that requires energy to occur. Evaporation is an endothermic reaction.

An endothermic reaction is any chemical reaction that requires or absorbs energy (often in the form of heat) from its environment. The activation energy for an endothermic reaction to take place is produced by the absorbed energy. Evaporation is an endothermic reaction. Evaporation is a process in which the molecules that constitutes a liquid absorbs sufficient energy and convert to the gaseous state.

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."