Question

Which of the following phase changes would release energy as it occurs?

Melting
Boiling
Evaporating
Freezing

Answer 1

I think boiling or evaporation

Answer 2

Or freezing :D

Answer 3

Condensing
Gas→liquid

Exothermic, heat released = energy released

Answer 4

So I think it is Boiling..

Answer 5

Yah exothermic (exit) energy released. Endothermic (enters) energy enters.

Answer 6

melting and boiling are endothermic my lesson says sooo

Answer 7

condensation and freezing are exothermic so I will say freezing

Answer 8

I don't think the answer is Boiling !
Boiling is turning from liquid to gas like right?
compared to liquids gases have a higher kinetic energy right ? So in order to obtain the required kinetic energy it need energy so it absorbs more like endothermic !

Answer 9

Yah it has to be freezing because I reviewed my lesson and it says exothermic condensation and freezing. Since it is giving off energy (exiting) it has to be freezing.

Answer 10

Thank ya'll so much!!! I have one more that will be in this same category.

Answer 11

LOL! XD Yup it is Freezing! :D
Boiling REQUIRES energy, whereas freezing RELEASES energy.
So the right answer is freezing.

Answer 12

Yeah freezing is from liquid to solid. Liquids have lesser kinetic energy than the solids so the kinetic energy is reduced thus it releases heat