Steam v. Boiling Water

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Jacob Bershatski 4C
Posts: 30
Joined: Fri Sep 28, 2018 12:21 am

Steam v. Boiling Water

Postby Jacob Bershatski 4C » Sun Jan 27, 2019 8:25 pm

What is the explanation for why steam at 100*C causes a worse burn than boiling water at 100*C? I know he explained this in class but I am still a little confused.

Dhwani Krishnan 1G
Posts: 63
Joined: Fri Sep 28, 2018 12:17 am

Re: Steam v. Boiling Water

Postby Dhwani Krishnan 1G » Sun Jan 27, 2019 9:15 pm

The energy to boil water is (energy to melt) + (energy to boil).
The energy to have steam is (energy to boil) + (energy to vaporize)

Therefore, more energy (and thus, more heat) is required to form steam, which is why the burns are more severe.

megan blatt 2B
Posts: 61
Joined: Fri Sep 28, 2018 12:28 am

Re: Steam v. Boiling Water

Postby megan blatt 2B » Sun Jan 27, 2019 9:37 pm

If you look at a water heat capacity chart, the Jules of energy being added to liquid water after it reaches 100 degrees celsius is used to break the bonds of the molecules of liquid water and vaporize the water instead of being used to heat up the liquid water. Therefore, the steam contains more Jules of heats than liquid water which can be felt when one is burned b steam.

Jchellis 1I
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Re: Steam v. Boiling Water

Postby Jchellis 1I » Sun Jan 27, 2019 10:32 pm

So both creating steam and boiling water are exothermic?

Bryant Vong 2G
Posts: 32
Joined: Fri Apr 06, 2018 11:05 am

Re: Steam v. Boiling Water

Postby Bryant Vong 2G » Sun Jan 27, 2019 10:53 pm

There is more energy in steam than boiling water, because boiling water tops out at 100 degrees Celsius.


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