Temperature Changes during Phase Changes

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Sebastian Hurtado 1J
Posts: 42
Joined: Fri Sep 25, 2015 3:00 am

Temperature Changes during Phase Changes

Postby Sebastian Hurtado 1J » Thu Jan 07, 2016 11:32 am

Why is it that the temperature of a sample remains constant even though heat is being supplied during melting or boiling? Furthermore, why is it that water continues to hold the temperature of 0 degrees Celsius as ice melts but remains a liquid and not a solid?

Laila Sathe 1D
Posts: 27
Joined: Fri Sep 25, 2015 3:00 am

Re: Temperature Changes during Phase Changes

Postby Laila Sathe 1D » Thu Jan 07, 2016 11:37 am

Temp does not increase because the energy being added to the system is being used to break bonds and change the phase of matter instead of increasing the temperature. During the period of ice melting/freezing at 0oC, the substance is actually a combination of water and ice, and energy is being added to the system. The water doesn't freeze back into ice because there is still more energy being added despite the lack of a temperature change.


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