Letter 8159

HOW DOES ACID AFFECT DIRTY PENNIES?

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WHAT DOES THE ACID DO WHEN IT CLEANS THE PENNY? BECAUSE I AM DOING A SCIENCE EXPERIMENT IN SCHOOL AND ITS TITLE IS " HOW DOES ACID AFFECT AFFECT DIRTY PENNIES AND CLEAN NAILS?" ME AND MY FRIEND ARE DOING THIS AND REALLY NEED HELP PLEASE RESPOND.

THANKS:) FROM A SCIENCE PROJECT GIRL.

CHIP B.
- MILLERPLACE, NY, USA

How does acid affect dirty pennies?

Billy M.
- Norman, Oklahoma

Pennies are coated with copper oxide when they are made. The copper oxide makes the pennies look dirty, but they are really not. When the pennies are places in the acids the copper oxide get dissolved in the acids making the pennies clean.

Linsey Raymound
- Boston, NY, USA

Ed. note: Sorry, but for every metal finisher in the world there are a thousand students, and we are drowning under variations on this question which we've answered hundreds of times already. It's time for the students to read our F.A.Q. on the subject rather than to keep asking us to answer the question for them individually