Phase change

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Sydniespore
Posts: 14
Joined: Fri Jan 08, 2016 3:00 am

Phase change

Postby Sydniespore » Fri Jan 13, 2017 11:08 am

How would I be able to know if it's a phase change problem?

Emily Wang 1H
Posts: 26
Joined: Sat Jul 09, 2016 3:00 am
Been upvoted: 1 time

Re: Phase change

Postby Emily Wang 1H » Fri Jan 13, 2017 11:13 am

A problem involving a phase change will probably state it in the problem specifically, such as asking the energy needed to change solid water at a certain temp to gaseous steam at a certain temp.

Jenna_Hakel_2A
Posts: 34
Joined: Fri Jul 15, 2016 3:00 am

Re: Phase change

Postby Jenna_Hakel_2A » Fri Jan 13, 2017 11:16 am

I would think that there would be certain vocabulary used to indicate if the problem were a phase change problem, such as vaporization, fusion, or sublimation. In the case of water, we also know the temperatures at which the phase changes occur (0C/32F, 100C/212F), so if the temperature were to pass one of these values we would know that a phase change had occurred, or if words were used such as liquid in one part of the problem and vapor later. If the enthalpies of any of the phase changes were given, it would also be a clear indicator of the type of problem.

William Weng 2L
Posts: 10
Joined: Tue Oct 04, 2016 3:01 am

Re: Phase change

Postby William Weng 2L » Fri Jan 13, 2017 11:28 am

One more thing to add, the word latent heat also refers to the change of the state of the matter without any change to temperature. So, if that word appears, it is dealing with phase change.


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