Water heating curve

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Jane Burgan 1C
Posts: 73
Joined: Fri Sep 28, 2018 12:15 am

Water heating curve

Postby Jane Burgan 1C » Wed Jan 23, 2019 6:38 pm

For the water heating curve, when water is changing from solid to liquid form and from liquid to vapor form, the temperature remains constant. Even though the extra heat is being used to break down the bonds between the molecules, why isn't there at least a slight increase in temperature?

Steven Garcia 1H
Posts: 79
Joined: Fri Sep 28, 2018 12:16 am

Re: Water heating curve

Postby Steven Garcia 1H » Wed Jan 23, 2019 6:47 pm

All the extra heat is being used up for the breaking of the bonds in order to cause the phase change. There is no heat contributing to the temperature during a phase change because all the heat is used up.

Irene Zhou 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

Re: Water heating curve

Postby Irene Zhou 1E » Wed Jan 23, 2019 8:13 pm

When water is undergoing a change from solid to liquid or liquid to gas, all of the heat supplied during that time is used to break the bonds. Thus, the temperature only increases as the solid, liquid, or vapor continues to heat.

EllaBerry
Posts: 68
Joined: Fri Sep 28, 2018 12:29 am

Re: Water heating curve

Postby EllaBerry » Thu Jan 24, 2019 11:09 am

The heat being added during a phase change solely contributes to breaking apart molecules instead of to increasing the temperature of the system.

Katie_Duong_1D
Posts: 69
Joined: Fri Sep 28, 2018 12:27 am

Re: Water heating curve

Postby Katie_Duong_1D » Thu Jan 24, 2019 2:45 pm

The heat being used to change phases is only used to break the bonds because it takes a lot of energy to do so. This is shown by the horizontal line on the water heating curve. Temperature only increases during solid, liquid, and gas phases.

Kriti Goyal 4K 19
Posts: 32
Joined: Fri Sep 28, 2018 12:21 am

Re: Water heating curve

Postby Kriti Goyal 4K 19 » Thu Jan 24, 2019 5:00 pm

during the change of state, there is an initial rise all of the energy supplied through heat is used in breaking bonds, thus there is none residual to increase the temperature. Once all the bonds are broken, then the energy supplied can be used to increase the temperature of the substance as the change of state has occurred.

Lorena Zhang 4E
Posts: 63
Joined: Fri Sep 28, 2018 12:16 am

Re: Water heating curve

Postby Lorena Zhang 4E » Thu Jan 24, 2019 10:51 pm

The heat is used in breaking the bonds. In order to break the bond, a lot of energy would be required. Therefore, the temperature will not increase since all the heat is used up.

Danny Elias Dis 1E
Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

Re: Water heating curve

Postby Danny Elias Dis 1E » Fri Jan 25, 2019 9:39 am

If we were to make a heating curve for some substance other than water, would the general shape of the curve resemble that of water?


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