This Reader's Theater was written for a small group of 3 students. It was written to enhance a lesson in physical and chemical changes. In the script, Bob is looking forward to eating his candy bar when he opens it and sees that it has melted. Sally tells him not to feel too bad because it is just a physical change. Bob wants to know what she means by that so Sally and Arnold take a moment and describe the difference between physical and chemical changes. When they are through, Bob has a better