Message-Id: <3.0.5.32.19980729224009.007fd7a0@isaac.exploratorium.edu>
Date: Wed, 29 Jul 1998 22:40:09 -0700
To: pinhole
From: Eric Muller <emuller@exploratorium.edu>
Subject: re: CO2 bottle cars
>From: NFetter@aol.com
>Date: Tue, 28 Jul 1998 15:22:48 EDT
>Subject: Re: pinhole re: CO2 bottle cars
>X-Mailer: AOL for Macintosh sub 85
>
>Hi Eric,
>Another trick with the bottle rocket car is to use limestone (CaCO3) instead
>of baking soda. The limestone can be broken down into any size particles you
>like by pounding on it in a plastic bag with a hammer. The prticle size
>determines the rate (good chemical kinetics experiment) of reaction and hence
>the speed of the rocket car.
>Neil Fetter
>
>
Eric Muller
Teacher-In-Residence
Exploratorium Teacher Institute
3601 Lyon St.
San Francisco, CA 94123
emuller@exploratorium.edu
415-561-0313