Need recipe for 'Do coins corrode more in salt or fresh water'?

Subject: Need recipe for 'Do coins corrode more in salt or fresh water'?

Date: Mon Feb 4 11:04:15 2002
Posted by Susan Padgett
Grade level: K-3 School: North Pointe Elementary
City: Houston State/Province: TX Country: USA
Area of science: Other
ID: 1012838655.Ot

Message:


We're working on a Science Fair Project (3rd grade).  Topic:  Do coins corrode 
more in salt or fresh water"?  We mixed 5 tablespoons salt with approx. 10 oz. 
water 48 hours ago.  Placed penny in.  Still looks the same.  Should we have 
added some other ingredient?  What timeframe would corrosions evolve?  Looking 
for the recipe.  Thanks for your help!  Need ASAP!

Re: Need recipe for 'Do coins corrode more in salt or fresh water'?

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