Author Question: As ice is changed to water, energy is A) given to the ice. B) taken from the ice. C) neither of ... (Read 31 times)

kshipps · **on:** Jul 29, 2018

As ice is changed to water, energy is

A) given to the ice.
B) taken from the ice.
C) neither of these

Question 2

From a molecular point of view, explain why evaporation is a cooling process. What cools?

What will be an ideal response?

mathjasmine · **Reply #1 on:** Jul 29, 2018

Answer to Question 1

Answer: A

Answer to Question 2

Answer: Evaporation is the change of phase from liquid to gas. The molecules in the liquid most prone to make the transition and break through the surface to become a gas are the faster and more energetic molecules. So the molecules that evaporate are the faster, or more energetic. With selective removal of the more energetic molecules, a greater proportion of slower ones remain in the liquid. Hence the liquid is cooled.