Our class studied states of matter and phase changes. One of the more difficult concepts was sublimation (the change from solid to gas). We used dry ice to demonstrate this phase change. After which, we did some awesome experiments using the dry ice!
****Dry Ice should not be handled at home and requires a well ventilated room. We ran fans and opened all windows/doors. All the dry ice was only handled by the instructor using gloves, tongs, and protective eye wear. ***