Re: pinhole fun chem labs

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From: Algis Sodonis (asodonis@urbanschool.org)
Date: Mon May 09 2005 - 20:13:54 PDT 

Message-id: <fc.000f76110086790e3b9aca00cd80e80c.867969@urbanschool.org>
Date: Mon, 09 May 2005 20:13:54 -0700
Subject: Re: pinhole fun chem labs
From: "Algis Sodonis" <asodonis@urbanschool.org>

A real winner is making ziploc icecream

this is a lesson on colligiative properties- freezing point depression.

In a large ziploc bag, mix ice and salt (ordinary table salt works well, since it dissolves quickly)

In another smaller ziploc bag, about 1 cup milk, 1 teaspooon coffee creamer a few teaspoons sugar and some vanilla extract to taste
additional stir-ins can be optional.

place the smaller sealed bag into the larger one with ice/salt mixture and seal the larger bag. Start mixing everything (gloves can be helpful here). Within about 15-20 minutes, this will start to harden. It tastes surprisingly good.

Algis Sodonis

The Urban School of SF

"Pinhole Listserv" <pinhole@exploratorium.edu> on Sunday, May 8, 2005 at 2:20 PM -0800 wrote:
>I left myself a week at the end of the quarter to do some "just for
>fun" labs in my chemistry class. I was thinking along the lines of some
>polymer stuff but haven't come across anything that appealing. does
>anyone have any good suggestions that they've done in the past?
>Doesn't have to be polymer, can be from any unit/ any experiment or
>demo, but something that will send em off with a desire to take more
>chemistry.
>
>I've never had "free" time before.
>thanks
>marc
>
>
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