Temperature during phase changes  [ENDORSED]

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Christy Lee 2H
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Temperature during phase changes

Postby Christy Lee 2H » Thu Jan 11, 2018 4:50 pm

Why does the temperature stay the same during phase changes?

Tiffany Cao 1D
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Re: Temperature during phase changes  [ENDORSED]

Postby Tiffany Cao 1D » Thu Jan 11, 2018 4:52 pm

Temperature stays the same during phase changes, such as melting and vaporization, because all energy added is being used to break up the bonds rather increasing temperature.

joycelee1A
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Re: Temperature during phase changes

Postby joycelee1A » Thu Jan 11, 2018 4:56 pm

The energy used to otherwise increase the temperature (specific heat) is instead used to change phases (heat of fusion). Once the temperature for the boiling point or melting point is reached, the energy that would have raised the temperature goes into changing the phase.

Abigail Urbina 1K
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Re: Temperature during phase changes

Postby Abigail Urbina 1K » Thu Jan 11, 2018 7:09 pm

This is because the energy being supplied in the form of heat disrupts the INTERmolecular forces that hold the liquid or solid together. Nothing is happening intramolecularly.

Guangyu Li 2J
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Re: Temperature during phase changes

Postby Guangyu Li 2J » Fri Jan 12, 2018 12:04 am

In a simple way, since the melting process requires a large amount of energy, the temperature change when melting is not significant.

Just want to add something: in physics, we divide matters into crystals and non-crystal(amorphous matters) When crystals are melting, the temperature does not change. However, when non-crystals are melting, the temperature keeps going up

Hope this helps!


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