This cute little styrofoam cup is meeting its gruesome end with a brave face. Seriously though, the way acetone eats through styrofoam cups is mind-boggling, both in how fast it works, and because the ...

(via American Chemical Society) Have you ever seen a foam cup appear to melt away in acetone? Foam cups, bowls and containers are made of a lightweight but strong material – expanded polystyrene. How ...

Acetone is a solvent that breaks down Styrofoam, which results in the Styrofoam dissolving in Acetone similar to how sugar does in water. Styrofoam is a polystyrene that has been pumped with air.