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<p>[QUOTE=&quot;-jeffB, post: 2115963, member: 27832&quot;]In the older, innocent days, a favorite &quot;science experiment&quot; was to rub a shiny copper cent with <b>mercury</b>, turning it &quot;silver&quot; as the mercury combined (amalgamated) with the coin&#039;s surface.</p><p><br /></p><p>There are other ways to turn a penny &quot;silver&quot;, but that was the easiest one.</p><p><br /></p><p>(No need to go into a mercury-fueled panic, BTW; such coins didn&#039;t pick up <i>that</i> much mercury, and it sticks pretty tightly. The coin won&#039;t kill your family.)</p><p><br /></p><p>I just went searching for a YouTube video of this process, but no luck -- the best I found was someone doing it with mercuric nitrate, which is a lot nastier than mercury metal. Maybe I should do one myself, for old times&#039; sake. Let me just carefully crack open this old mercury switch, and... oops, BRB...[/QUOTE]</p><p><br /></p>

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