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<p>[QUOTE=&quot;-jeffB, post: 1136115, member: 27832&quot;]It might be zinc, but the standard way to do this -- it was in every &quot;chemical magic&quot; book from the 1950&#039;s -- was to rub a penny with mercury. The mercury alloys (amalgamates) with the copper, turning it silver-colored.</p><p><br /></p><p>I sort of miss the days when every science classroom, and most home chemistry setups, had a bottle of mercury.[/QUOTE]</p><p><br /></p>

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