I am fascinated by the chemistry of pennies. I have tried several experiments found in the Journal of Chemical Education.
I previously wrote about an experiment published in the Journal of Chemical Education called “Hydroglyphics”1.
In this Activity, students test two chemical deicers, rock salt (sodium chloride) and calcium chloride, to determine which melts ice better and whether it is worth the extra cost to buy a more expensive deicer. They perform three tests comparing the two deicers, predict which will be more effective at melting through a thin disk of ice, and then test their prediction.