Question

state 1 similarity and 2 difference between boiling and evaporation

Answer 1

Similarity between boiling and evaporation:
Both boiling and evaporation results in the phase change from liquid state to vapour state. 

Differences between boiling and evaporation:

             Boiling            

                 Evaporation      

It is a rapid process.

It is a slow process.

It is takes place at the entire mass of the liquid.

It takes place at the surface of the liquid.


1st and 3rd is boiling and 2nd and 4rth is evaporation

Answer 2

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☜☆☞ Difference:
▶Evaporation takes internal energy while for boiling we have to provide external energy or we have to reduce the pressure.
▶As Evaporation takes internal energy therefore evaporation results in cooling while this is not observed in boiling.
▶Evaporation can occur below saturated temperature while Boiling occurs only at and above saturated temperature.
▶Evaporation occurs at only at the liquid/vapor interface while Boiling may occur at a solid/liquid interface.
▶Vapor bubbles are formed in Boiling while in Evaporation there are no bubble formation and no bubble motion.
▶There are different regimes of boiling (like nucleate boiling, transition boiling, film boiling etc.) while these regimes are not present in Evaporation.
▶Rate at which a substance changes from liquid to vapor through Evaporation is much slower than when boiling.

☜☆☞Similarities:
▶Both results in change of phase from liquid to gaseous phase. Evaporartion is similar to boiling because they are both the changing of a liquid into a gas, wether it's rapidly or slowly. They are both the state change from a liquid to a gas.

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