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Plastics are a wide range of synthetic or semisynthetic materials composed primarily of polymers Their defining characteristic, plasticity, allows them to be molded, extruded, or pressed into a. Plastic, polymeric material that has the capability of being molded or shaped, usually by the application of heat and pressure. What are they and what do we use them for? These materials consist of polymers, which are long chains of molecules, and. From your toothbrush to your bloodstream How everyday plastics break down into fragments small enough to cross into your organs. Plastic is a versatile material used to make thousands of products people use every day Learn about the types of plastic classification, history and unique chemistry that gives plastic its. In this article, we'll examine the chemistry of plastic, how it's made, how it's used, and how it's disposed of and recycled We'll also look at some new biologically based plastics and their role. Worried about bisphenol a (bpa) and other plastic chemicals Read about types of plastics, how they're made and what the resin identification (recycling) numbers mean. The world of plastic contains many confusing terms, as we discovered while reporting.