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Author Question: As ice is changed to water, energy is A) given to the ice. B) taken from the ice. C) neither of ... (Read 17 times)

kshipps

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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?


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mathjasmine

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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.


kshipps

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Reply 2 on: Jul 29, 2018
Excellent

chereeb

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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