is evaporation an exothermic or endothermic process?
How is evaporation and condensation an endothermic change when heat is needed for the reaction to take place? Evaporation is endothermic, meaning it takes heat away from its surroundings. Condensation however, is the opposite with it being exothermic, where it releases heat into the surroundings. Allow me to explain. Evaporation is where particles in a liquid change state into a gas. This requires heat to do so because you are breaking the bonds between the liquid particles to make it a gas. This is endothermic because it takes heat away from its surroundings. For example, think about when you sweat during intense training.