Re: pinhole bunsun burners

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From: George Fosselius (gfossel@ix.netcom.com)
Date: Mon Sep 10 2001 - 07:04:27 PDT 

Message-ID: <000701c13a01$8d161ee0$90d1f7a5@albany.k12.ca.us>
From: "George Fosselius" <gfossel@ix.netcom.com>
Subject: Re: pinhole bunsun burners
Date: Mon, 10 Sep 2001 07:04:27 -0700

Alternatives to Bunsen burners:

Candles stuck on tinned can lids -- free-- kids bring
Alcohol lamps (rubbing alcohol OK)
Small propane or Butane camp stove (demo or large group)

Nota Bene: heat output:, messiness and safety issues vary.
Choose wisely

Propane and Butane are denser than air (44 and 56 versus 29 for air --g per
mole)
they sink instead of rise like unlit natural gas (16)

Even gas powered stoves need adult supervision (only a few steps away)
because of the volume of heat.

Avoid liquid fueled stoves; the risk of a liquid gasoline leak has too great
a danger.

Lamp oil or kerosene lamps ??? breakage and spill...
Tiki torches??? tipover risk and smoke...

Expect further comments from Neil and others

George Fosselius
Albany 12 years chem, then computers, science, physics, astro then high risk
kids.
Back in the classroom this year: C++ and keyboarding; some computer support
to elementary teachers.
Have a good year.

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