Styrofoam vs. Polystyrene

Expanded polystyrene foam, such as is used in cups and packaging.

A rigid clear thermoplastic polymer of styrene that can be molded into objects or made into a foam that is used as thermal insulation.

A light resilient foam of polystyrene

(organic chemistry) A vinylic polymer of styrene, CH₂CHphenyl.

(organic chemistry) An alkane chain of benzene molecules, RCH₂CHphenylR.

A polymer of styrene; a rigid transparent thermoplastic;