Material composition refers to the specific substances and elements that make up a material. This includes both the chemical elements, like carbon or oxygen, and the physical components, such as metals, polymers, or ceramics. Understanding material composition is essential in fields like engineering and materials science, as it influences properties like strength, flexibility, and conductivity. Different materials have unique compositions that determine their applications. For example, the composition of steel includes iron and carbon, which gives it strength and durability, making it ideal for construction. In contrast, plastic is composed of long chains of polymers, which provide flexibility and resistance to corrosion, suitable for packaging and various consumer products.