This is a fantastic experiment. I have used it to reinforce a variety of different topics;

When a drop of water is added the two solids are able to get closer together. The following reaction occurs:

2 Al(s) + 3 I2(s) -------> 2 AlI3(s)

This reaction is very exothermic and the heat generated causes the Iodine crystals to sublime.

If you have any other ideas or comments regarding this reaction please email me and I will add them here.

Preparation Time                7 Mins

Difficulty                            3/10

WOW! Factor                    7/10


Iodine Flare