So why is dry ice called dry ice? Dry ice is the “frozen” form of the gas, carbon dioxide. While it may be called ice – it never melts – it goes right from being a solid to being a gas. This is called SUBLIMATION. When I put the quarter on the dry ice, it cause it to turn into a gas very quickly. As the gas escaped around the sides of the quarter, it caused it to vibrate quickly and make that cool screaming sound.
DRY ICE is extremely dangerous. ADULT SUPERVISION REQUIRED.
Handling Dry Ice
Due to its extremely cold temperature (-78.5oC, or -109.3oF), dry ice can cause damage to the skin if handled. Use tongs or insulating gloves when handling dry ice. It is also important when crushing or grinding the solid not to get any of the dust into your eyes. Wear protective goggles.
Storing and Transporting Dry Ice
Dry ice continuously sublimates as heat enters it from its surroundings. The CO2 gas that evolves must be vented from the container. Do not seal dry ice into a container except as detailed below, because an explosive bursting of the container can result. A Styrofoam (polystyrene foam) ice chest with a loose fitting lid makes a good container for transporting dry ice.