Acetone Dissolves Styrofoam Into Goo

(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 then does acetone reduce this substance to a blob of goo? In this week’s video, we team up with chemistry professor Matt Hartings, Ph.D., to explain this weird phenomenon.