gregjohn wrote:
> My son has an elementary school homework assignment where he's supposed to do
> simple observations on a solid, liquid, and gas for seven days.  Solids: easy,
> liquids: seven is probably exact the number that is easy to name.  Gases?  So
> far, we've done air, boiling water, and the smoke from cooking fish.  But
> that's about all I can think of without either getting dangerous or overly
> egg-headed.

Without breaking air down into oxygen, nitrogen and argon, how about:

Air
Steam
Methane (natural gas)
Butane (lighter gas)
Carbon dioxide (exhalation)
Carbon monoxide (faulty appliances - hopefully not!)
Argon (fluorescent lightbulbs)
Neon (the same)

Post a reply to this message