MadSci Network: Chemistry

Subject: Chemestry question about soaking change in solvents

Date: Wed Aug 16 13:45:48 2006
Posted by Paige
Grade level: 7-9 School: Stevenson Middle School
City: Honolulu State/Province: HI Country: United States
Area of science: Chemistry
ID: 1155761148.Ch

I put a penny in vinegar. I came clean. I added a nickle and a dime along with the penny. The nickle and dime are now turning copper. Why does this happen? I am a 8th grade teacher,and all the kids are asking me. I also have a penny in bleach. It did not do anything for a week. Now the bleach is all black and the penny is collecting a greenish-white substance. What is happining chemically in both these cases?

Re: Chemestry question about soaking change in solvents

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