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<p>[QUOTE=&quot;-jeffB, post: 8286052, member: 27832&quot;]Yep. Mass is conserved, and while it <i>is</i> possible to change the density of some alloys with phase changes, that&#039;s not what&#039;s happening here.</p><p><br /></p><p>A struck coin is a complex shape. The easiest way to get its volume is to weigh it, then divide by the metal&#039;s known density. Next easiest would be to dunk it in liquid and measure its displacement.[/QUOTE]</p><p><br /></p>

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