Steam burns more than water

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EMurphy_2L
Posts: 128
Joined: Sat Sep 07, 2019 12:16 am

Steam burns more than water

Postby EMurphy_2L » Sat Feb 08, 2020 3:03 pm

Can someone please explain why steam at 100 oC causes a worse burn than boiling water at 100 oC? He went through this too fast in class. Thanks!

Charisse Vu 1H
Posts: 101
Joined: Thu Jul 25, 2019 12:17 am

Re: Steam burns more than water

Postby Charisse Vu 1H » Sat Feb 08, 2020 3:10 pm

Steam at 100C causes a worse burn than water at 100C because steam at 100C has a lot more energy than boiling water at the same temperature. If you recall the phase change graph, a lot of energy is put into vaporizing water into a gas. During a phase change, the temperature remains constant, but the amount of heat supplied continues to increase. Therefore, since steam has a lot more heat (energy) than boiling water at the same temperature, the burn from a steam is much worse.

Brian J Cheng 1I
Posts: 115
Joined: Thu Jul 11, 2019 12:15 am

Re: Steam burns more than water

Postby Brian J Cheng 1I » Sat Feb 08, 2020 4:26 pm

Steam causes a larger energy change/transfer than water when it touches your skin. Larger energy transfer == more damage.

205405339
Posts: 77
Joined: Thu Jul 11, 2019 12:16 am

Re: Steam burns more than water

Postby 205405339 » Sat Feb 08, 2020 4:30 pm

the energy from steam is higher than the energy for water

Naneeta Desar 1K
Posts: 106
Joined: Fri Aug 09, 2019 12:15 am

Re: Steam burns more than water

Postby Naneeta Desar 1K » Sat Feb 08, 2020 4:38 pm

Since steam has a higher energy than water, it burns more.

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

Re: Steam burns more than water

Postby Sartaj Bal 1J » Sat Feb 08, 2020 6:29 pm

Steam is not hotter than boiling water at 100 C but will be carrying more energy because of the energy input required to change the phase. As a result, there is a large enthalpy for condensation and when the energy is released on skin, there is a more severe burn.


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