Thermoplastics are a type of plastic that becomes soft and moldable when heated and hardens upon cooling. This property allows them to be reshaped multiple times without undergoing any significant chemical change. Common examples of thermoplastics include polyethylene, polypropylene, and polystyrene, which are widely used in packaging, containers, and various consumer products. These materials are favored in manufacturing due to their versatility and ease of processing. They can be formed using techniques like injection molding and extrusion, making them suitable for a wide range of applications. Additionally, thermoplastics can be recycled, contributing to more sustainable practices in the plastic industry.