Science with Mr. Adkins

Yesterday we took an in-school field trip to Mr. Adkins' high school science lab to see his salt water and fresh water fish tanks.  While we were there, students started asking about some of the experiments around the room from his chemistry students.  Mr. Adkins showed us a few different chemical reactions that were quite interesting!  In one, he dropped a 20 cent coin in a beaker of acid, and right before our eyes the coin started to disappear!  Here's a picture of what the coin looked like after the reaction. We couldn't believe how thin it was!  We think we'll definitely have to visit Mr. Adkins' room again for some more demonstrations...