What Is the Corrosion on a Penny?

Answer

The corrosion on a penny is oxidation. It is when the oxygen in the air reacts with the copper and it develops a green finish. This green is called patina.
Q&A Related to "What Is the Corrosion on a Penny"
Several sources: Older copper cents corrode because copper can oxidize and turn greenish. The Statue of Liberty is copper and has oxidized to a green patina over the last century.
http://wiki.answers.com/Q/Speed+of+corrosion+of+a+...
leave them in warm salty water and let it slowly evaporate over a few days, they should turn greenish as the copper changes to copper chloride.
http://answers.yahoo.com/question/index?qid=201003...
I'm not sure about corrosion, but if they're just generally dull, dingy and yucky looking; try Taco Bell sauce. Saturate a penny in Taco Bell sauce and then rub it between your fingers
http://aolanswers.com/questions/money_finance_4959...
best answer please.i did a project on this in high school. dip them and leave them in ketchup for like ten minutes. you ll be amazed. ketchup has so much acid in it. imagine what
http://answers.yahoo.com/question/index?qid=200707...
Explore this Topic
To remove corrosion from pennies there is a surprisingly cheap and easy way to accomplish this. Simply put the pennies in ketchup for 10-20 minutes the acid will ...
Lemon juice is the best juice for cleaning pennies. The acid in the juice is corrosive and will remove any tarnish from your pennies easily. ...
There are many household items that you can use to clean copper pennies. You might try a vinegar solution and soak them in it until the acid can eat away the corrosion ...
About -  Privacy -  AskEraser  -  Careers -  Ask Blog -  Mobile -  Help -  Feedback © 2014 Ask.com