A huge bar of polystyrene foam dissolves in a few milliliters of acetone
Did you know that polystyrene foam dissolves in acetone?! Here’s a simple experiment which you can amaze your friends with.
Wear protective glasses and gloves. The experiment should be conducted in a well-ventilated room.
Reagents and equipment:
acetone 10 ml;
Pour acetone into a Petri dish. Slowly lower a large piece of polystyrene foam into it. The polystyrene foam disappears before your eyes.
Acetone is a good solvent. Polystyrene foam consists of foamy polystyrene, a material which partially dissolves in acetone and loses its structure. The air contained in the polystyrene foam is released, and its volume decreases drastically. All that is left is a thick and sticky mass of acetone and large polystyrene molecules.