I must say that one of my favorite experiments in Science was the "By Golly, By Time, By Gum" experiment. At first we all strted out with a piece of gum, we all chewed our pieces of gum for 2 minutes then set them (on their wrappers) on a scale that meausred the gums weight. After another 2 minutes of chewing, we repeated the whole weighing process.
We all soon found out that after every 2 minutes of chewing, the gum would loose more and more weight. I likes this experiment because we were all able to enjoy some gum, but also fit it into something educational. I sure hope I will be able to do this experiment again and can't wait until my next upcoming science experiment!