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<p>[QUOTE=&quot;Oldhoopster, post: 3005880, member: 84179&quot;]Here&#039;s an experiment you can do at home.&nbsp; Take a regular utility knife a scrape the copper plating of rim and selected parts of a cent (you don&#039;t need a chisel, hammer or rock).&nbsp; The mint says that the plating is approx. 8-10 microns (approx. 1/3 to 1/2 a mil if you&#039;re a machinist).&nbsp; It doesn&#039;t take much to scrape through the plating and expose the zinc.&nbsp; If you have good hand a coordination and/or are somewhat artistic, you can scrape away copper on other parts of the cent just as easily.&nbsp; Now take that coin with the exposed zinc and soak it in vinegar, Coke, or bleach for a few days or weeks.&nbsp; Know what you&#039;re going to get?&nbsp; That&#039;s right, something that looks like the coin you posted.&nbsp; Zinc is a very reactive metal and when it&#039;s exposed to an acidic environment, it&#039;s dissolves.&nbsp; By weighing your coin and showing that it&#039;s light weight, you basically confirmed this.</p><p><br /></p><p>Better living through Chemistry</p><p><br /></p><p>Hope this helps.&nbsp; I&#039;m outta here[/QUOTE]</p><p><br /></p>

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