> 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.

> Your freezer contains a gas, sure you can't observe it directly

Or rather, you can - but please don't! :-S

-- 
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*

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