What is that science experiment thingy that makes....??

Question

pennies shinier? and does it work on all coins?

Answer 1

You mean the gold pennies experiment? Which is a bit tuffer or the put a penny in vinegar experiment. The gold pennies experiment is the best. E-Mail me if you want to know more.

Answer 2

I believe you boil pennies in soap water.

Answer 3

My son is in Kindergarten, he says put it in cola.

Answer 4

I think by putting it in any acidic material it will be cleaner.  It should work on any coin.