You know it as Styrofoam.

Polystyrene's Versatile Properties Include :

Its Shortcomings:

Its use in our everyday life is quite common and although it poses a serious environmental problem for our future on this planet, its still in use. Restaurants serve their take-out meals in clamshell packaging and nearly everything shipped in a box is molded in polystyrene. We have become dependent on it without thinking about the further effect it may have on the earth.

Actually, while styrofoam is made out of foamed polystyrene, polystyrene can also be formed into a solid plastic, which can be clear, translucent colored or opaque colored. Polystyrene is used in things like games and packaging. It's pretty impact resistant but can crack or break.

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