Plastics are synthetic materials made from polymers, which are long chains of molecules. They are widely used in everyday products due to their versatility, durability, and lightweight nature. Common examples include polyethylene bags, PVC pipes, and polystyrene containers. The production of plastics has revolutionized various industries, from packaging to automotive. However, the environmental impact of plastic waste has raised concerns, leading to increased efforts in recycling and developing biodegradable alternatives. Understanding the properties and applications of plastics is essential for sustainable development and innovation in material science.