Check out this science experiment video to see how to implode a soda can with heat. That's right, implosion. Take an empty aluminum soda pop can and put a spoon of water into it. Heat it over the stovetop for about thirty seconds, then invert the can and dip it into a bowl of water. This is as simple as science gets, and easy to do, just be safe around the stove flame and don't burn yourself.