On Thursday, March 27, 2014 8:21:49 AM UTC-4, Stormin Mormon wrote:
On 3/26/2014 8:19 PM, nestork wrote:

When I was a kid, me and my friends would put coins on the railway

tracks and let the trains run over them. I learned that nickel was much

harder than copper.



Now, pennies are zinc. I'm not sure how zinc

rates, on hardness. Harder than copper, I'd

guess.



--

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Christopher A. Young

Learn about Jesus

www.lds.org

.


zinc is farly hard, melts a way lower temperature and corrodes easily. te copper plating may help money last longer