IGCSE Organic Chemistry Practice Test

Polypropene is a lightweight, tough plastic with good chemical resistance that can be easily melt-processed into strong fibers and clear films. These traits make it ideal for ropes and packaging. Fibers from polypropylene have high tensile strength and wear well, giving durable ropes and twines. For packaging, its ability to form thin, clear, inexpensive films and containers, along with good barrier properties against moisture and some gases, makes it a staple material. Food coloring isn’t a use of the polymer itself—colorants are additives, not a primary function of the material. Glassware is made from glass, not plastic, so polypropylene wouldn’t be used to make traditional glass items. Electrical wire insulation is typically done with other polymers like PVC or polyethylene, chosen for flexibility and flame retardancy, so that use isn’t characteristic of polypropene.