Phase changes

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ng1D
Posts: 43
Joined: Wed Sep 18, 2019 12:17 am

Phase changes

Postby ng1D » Sat Jan 25, 2020 2:09 pm

Are phase changes identified by a change from solid to liquid to gas and vice versa? And why does temperature remain constant during a phase change?

Alice Ma 2K
Posts: 52
Joined: Wed Nov 13, 2019 12:26 am

Re: Phase changes

Postby Alice Ma 2K » Sat Jan 25, 2020 2:17 pm

Phase changes are whenever the phase (solid, liquid, or gas) of a compound changes. The temperature stays constant during the change because the energy is being used to break the bonds that are holding that compound in that specific phase.

Sartaj Bal 1J
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

Re: Phase changes

Postby Sartaj Bal 1J » Sat Jan 25, 2020 2:20 pm

A phase change is a change from one state (solid, liquid, or gas) to another. Because heat is required during melting or boiling (phase transition), the temperature of the sample remains constant even though heat is being supplied.

WesleyWu_1C
Posts: 117
Joined: Thu Jul 25, 2019 12:16 am

Re: Phase changes

Postby WesleyWu_1C » Sat Jan 25, 2020 3:16 pm

Temperature remains constant during these phase changes because the heat is actually breaking the intermolecular forces.

EllieSchmidtke_4I
Posts: 51
Joined: Wed Feb 20, 2019 12:16 am

Re: Phase changes

Postby EllieSchmidtke_4I » Sat Jan 25, 2020 3:41 pm

Temperature remains constant during phase changes because the energy that would be released/required to change temperature is instead being used to change the phase.

Shutong Hou_1F
Posts: 117
Joined: Sat Sep 14, 2019 12:17 am

Re: Phase changes

Postby Shutong Hou_1F » Sat Jan 25, 2020 8:44 pm

Temperature remain constant during a phase change, because the increase in internal energy would be used to break intermolecular forces and to increase the distance between molecules. For example, the density of gas is less than that of liquid, which is less than that of solid.

Timmy Nguyen Dis 1I
Posts: 107
Joined: Sat Aug 17, 2019 12:17 am

Re: Phase changes

Postby Timmy Nguyen Dis 1I » Sat Jan 25, 2020 11:08 pm

Temp remains constant because the energy is being used for the object to turn into the next phase.

RobertXu_2J
Posts: 104
Joined: Fri Aug 30, 2019 12:17 am

Re: Phase changes

Postby RobertXu_2J » Sun Jan 26, 2020 1:37 am

Phase changes are literally just changes from different states of matter (solid, liquid, etc.). Temperature does not change, because the energy that is being added to the material is all going toward changing the phase (e.g from solid to liquid, the molecules are excited and they move faster so the intermolecular forces are weakened and the molecules move around more).


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