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vanj510
Posts: 3
Joined: Wed Nov 28, 2007 11:11 pm
Occupation: Student

Coin Tarnish

Postby vanj510 » Sun Dec 09, 2007 8:37 pm

Can please tell me how long it will take for a coin to tarnish?

Thanks,
Van M
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staryl13
Former Expert
Posts: 404
Joined: Tue Sep 18, 2007 3:27 pm
Occupation: Research Assistant

Postby staryl13 » Sun Dec 09, 2007 8:52 pm

Hi Van
It really depends on the coin. If it is a copper coin, this link is pretty helpful-
http://resources.schoolscience.co.uk/CD ... 31pg3.html
If you tell us more information about your project, we might be able to help you more, thanks!
"There is a single light of science, and to brighten it anywhere is to brighten it everywhere." -Isaac Asimov
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