* Elements: Elements are the fundamental building blocks of matter. They cannot be broken down into simpler substances. Examples include iron, carbon, and oxygen.
* Compounds: Compounds are formed when two or more elements chemically combine in a fixed ratio. For example, water (H₂O) is a compound made of hydrogen and oxygen.
* Mixtures: Mixtures are combinations of two or more substances that are not chemically bonded. The substances in a mixture retain their individual properties.
A fork is made of a metal like stainless steel, which is a mixture of:
* Iron (Fe): The main component, providing strength.
* Chromium (Cr): Adds resistance to corrosion.
* Nickel (Ni): Enhances shine and corrosion resistance.
* Carbon (C): Contributes to hardness.
Since these elements are not chemically combined in a fixed ratio, a fork is classified as a mixture.