I never made a volcano as a child for a science experiment, but I did love cleaning pennies! Here’s how from Science Bob,
There is some pretty fancy chemistry going on in that little bowl of yours. It turns out that vinegar is an acid, and the acid in the vinegar reacts with the salt to remove what chemists call copper oxide which was making your pennies dull. You’re not done yet, though, lets try another experiment:
Add more pennies to the bowl for 10 seconds, but this time , don’t rinse them off. Place them on a paper towel to dry off. In time the pennies will turn greenish-blue as a chemical called malachite forms on your pennies.
Click through for the in-depth instructions. And stay tuned for another science experiment next Monday!
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