= Plastics
{wiki=Plastics}
Plastics are a wide range of synthetic or semi-synthetic materials made from polymers, which are large molecules composed of repeating structural units called monomers. These materials are typically derived from petrochemicals and can exhibit a variety of properties depending on their composition and how they are processed. \#\#\# Categories of Plastics: 1. **Thermoplastics**: These plastics can be melted and reformed multiple times without significant chemical change.
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