Simple Science Experiment: Clean a Penny - MetroFamily Magazine

Do you have a collection of pennies somewhere in your house? More than likely those pennies don’t have a nice coppery shine but instead are dull, dark and possibly tinted with green. This month you will learn about a great technique to clean off this coating and reveal the true shiny copper color below. You will also learn that this is not just scrubbing off dirt, but it is a branch of science called chemistry.

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