http://www.candyexperiments.com/
We had fun last year doing some candy experiments – see the above link for some fun ideas. One of our favorites was the simplest, just put different types of candy onto a paper plate and microwave – see how they all behave. Be careful, of course! Hot candy can burn – mom should be the one handling the plate.
@JenniferMason – we also eat a lot of our halloween candy LOL. It is a treat for us as we don’t eat a lot of candy generally.