Certain plastics are materials made from synthetic substances that can be molded into various shapes. They are widely used in everyday items, from packaging to toys, because they are lightweight, durable, and often resistant to moisture. Common types of plastics include polyethylene, used in shopping bags, and polypropylene, found in food containers. These plastics can be recycled, which helps reduce waste and conserve resources. However, not all plastics are created equal; some, like PVC, can release harmful chemicals when burned. Understanding the different types of plastics and their properties is essential for making environmentally friendly choices.