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Author Topic: Why doesn't water burn?  (Read 3606 times)

@DavidWorley94

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Why doesn't water burn?
« on: 05/04/2011 17:30:02 »
@DavidWorley94 asked the Naked Scientists:
   
Why doesn't water burn since it's made of hydrogen and oxygen?

Cheers :)

What do you think?
« Last Edit: 05/04/2011 17:30:02 by _system »


 

Offline syhprum

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Why doesn't water burn?
« Reply #1 on: 05/04/2011 19:16:09 »
You might as well ask why do ashes not burn, water is basically burnt Hydrogen once its burnt its burnt you can't burn it a second time.
 

Offline JMLCarter

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Why doesn't water burn?
« Reply #2 on: 05/04/2011 21:32:13 »
You can put energy in and split it into H and O again as a fuel store. That's got some applications.
 

Offline Supercryptid

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Why doesn't water burn?
« Reply #3 on: 05/04/2011 22:46:21 »
Water will burn actually...in a fluorine atmosphere, that is.
 

Offline syhprum

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Why doesn't water burn?
« Reply #4 on: 06/04/2011 01:38:36 »
That's fine all we have to do is replace the Earths Nitrogen/Oxygen atmosphere with Florine then we really can run our cars on water.
 

Offline yor_on

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Why doesn't water burn?
« Reply #5 on: 06/04/2011 02:39:25 »
I had to check that one up. It depends on how you define it. Water does not burn in itself. But some metals, like magnesium will burn under water. How it does it is by 'stealing' the oxygen from the water in its chemical reaction. When something 'burns' chemistry describe it as a very fast oxidation, as compared to rusting that is a slower oxidation. Water is already 'oxidized', same as the water from the exhaust pipe in your car comes from the petrol used up in its engine. But some materials, metals and compounds can free that bound oxygen inside water and use it for its own oxidation. What it does is to split the water into hydrogen and oxygen. And Chlorine Tri-Flouride can even burn asbestos in its oxidation. But it costs energy to do so, so it's no answer to 'free energy'.
« Last Edit: 06/04/2011 02:42:26 by yor_on »
 

Offline Geezer

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Why doesn't water burn?
« Reply #6 on: 06/04/2011 02:47:19 »
This one ought to be in Chemistry!
 

Offline JnA

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Why doesn't water burn?
« Reply #7 on: 06/04/2011 10:22:34 »

water 'burns' the skin when it's frozen

;)
 

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Why doesn't water burn?
« Reply #7 on: 06/04/2011 10:22:34 »

 

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