I got this idea from the Steve Spangler site. Fast, easy, fun and the girls screamed with delight when it worked! You only need three things for this experiment: glass bowl, lukewarm water and M&M’s.
Place some M&M’s in the bottom of the bowl. Fill with enough lukewarm water to cover about an inch over the candy.
Keep your eyes on the bowl because the color starts coming off immediately.
AAAHHHHHHHHHHHHHHHHHHHHHH the letters are coming off!
If you look closely, you can see the the M’s popped off the candy and floated to the top. It happened so quickly that the girls loved it.