Vaporization requires power to break the bonds holding a molecule together in a liquid, Condensation releases energy as fluid molecules have much much less kinetic energy than gaseous molecules.

Endothermic means heat in. Vaporization favor melting requires power to be placed in because that the molecule to change state from liquid to gas. The short-lived bonds in between liquid molecules should be broken for the liquid to readjust to a gas this requires power to it is in put right into the system, ( endothermic)

Exothermic means heat out. Condensation like freezing releases heat. The gas molecules need to release huge amounts the kinetic energy to slow-moving down enough to form the short-term bonds required to come to be a liquid. The extra warm goes out of the system right into the bordering environment. ( Exothermic.)

Answer attach

january 19, 2018

Because gaseous particles possess an ext kinetic power than those in a fluid state.

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In a solid particles have the lowest amount of power relative come those in a liquid state and also a gaseous state (the highest possible amount of power of the three states). Binding require energy to break and release energy when gift formed. To type a fluid from a solid, we need to break bonds and to type a gas native a fluid we need to break even more bonds. This calls for a higher input of power each time an ext bonds space broken.


Endothermic procedures ( graph A ) room where power is soaked up by a system / reactants and also the power of the particles connected is higher than before the procedure occurred.

Exothermic procedures ( graph B ) space the the opposite of endothermic procedures - energy is released by a system / reactants and the particles involved have a lower energy after the process than before.


Linking this to solid, liquid and gas states, when you vaporise a substance (turn it right into a gas) girlfriend are fostering the particles in the substance to a state through which they will certainly possess an ext energy. This power has come "come" from somewhere and also so energy is taken in native the surroundings of the process. Through state changes, this is typically in the kind of heat (although pressure deserve to be likewise be factored in).

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Condensation is a gas turning into a liquid and so thus a high energy "state" of particles ending up being a lower power "state" the particles. If the all at once energy of the particles connected is reduced than before the process occurred, power must have actually been released and also thus the procedure can be considered exothermic.