This activity/experiment asks kids to dissolve M&Ms in different liquids: water, oil, and rubbing alcohol. In each liquid, the coating of the M&Ms will dissolve at different rates.

This is an interactive presentation from the American Chemical Society about braces. The presentation gives a history of braces, and how metal is heated to make thin wires. The presentation includes some explanations about how heated atoms move, and how braces nowadays use nitinol. The interactive also includes short explanations about each concept discussed. Other resources are included on the page related to teeth: flouride, blue lights, teeth strength.