Expert: Spaceman - 6/20/2005

Question
Hello Spaceman, and thank you for your quick and very interesting answer!
Can you emphasize a little bit more about the  dissolved gases released when water is heated? I checked out the website you gave me - it is really interesting, and I saw that there are gases releasd when water is electrolysed (hydrogen+oxygen). Is this the same thing that happens when water is heated?

Thanks again!
Sam
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Followup To
Question -
Hello!
I'm 26.
I'd like to know, what exactly happens, physically speaking, when water is being boiled.
Second, is there a diffrernce if the water is boiled for the first time or if it's reboiled (after it cooled down)?

Thank you!

Answer -
Hello again Sam:

Thanks for your questions!


I'd like to know, what exactly happens, physically speaking, when water is being boiled.
A. It forms bubbles because the dissloved gases inside the water are being released by the increased molecular action.
Review this next website for details:witcombe.sbc.edu/water/chemistryproperties.html  

Second, is there a diffrernce if the water is boiled for the first time or if it's reboiled (after it cooled down)?
A. Yes, there are fewer dissolved gases in water that has been boiled perviously.

Let me know if you need more info!

Best Wishes,
Spaceman  

Answer
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Some more info Sam:

Can you emphasize a little bit more about the dissolved gases released when water is heated? I checked out the website you gave me -- it is really interesting, and I saw that there are gases released when water is electrolyzed (hydrogen+oxygen). Is this the same thing that happens when water is heated?
A. Yes, there is a lot of O2 and N2 which is loosely bonded to the H2O molecule in most "free-water." This is how fish breathe in oxygen. When water is heated these loose atom pairs of nitrogen and oxygen are released in the form of bubbles.

My Best,
Spaceman