And lo on Fri, 11 Jan 2008 14:40:52 -0000, Invisible <voi### [at] devnull> did  
spake, saying:

>> Nitrogen, Oxygen, Argon, Carbon Dioxide, Neon, Helium, Water Vapour; or  
>> what you called "air" :-P
>
> Dude... Argon??
>
>> Is smoke a gas, I thought it was airborne particulate?
>
> Depends on what kind. (It's like asking "what chemical is rock?")
>
> Smoke from a wood fire is mostly soot particles. Burning oil produces  
> that charactoristic blue vapour. And so on.

Oh sure it contains gases, I was thinking more along the lines of 'I have  
observed air and I have observed oxygen' that doesn't really count as two  
gases.

>> Your freezer contains a gas, sure you can't observe it directly
>
> Or rather, you can - but please don't! :-S

Well quite :-) Thinking about it if you've got a computer 'air-duster'  
cleaner then that contains a compressed-to-a-liquid gas, normally one of  
the flurocarbons.

-- 
Phil Cook

--
I once tried to be apathetic, but I just couldn't be bothered
http://flipc.blogspot.com

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