From: NFetter <NFetter@aol.com>
Date: Mon, 20 Apr 1998 21:44:01 EDT
To: pinhole@exploratorium.edu
Subject: Re: Re: Penny Cu/Zn Alloys
Hi Al,
In the experiment you describe, the gunk on the outside of the penny is sodium
zincate and amalgamates readily with either the copper coating or with a solid
copper penny.
Neil fetter