Deutsch: Chemische Verbindung / Español: Compuesto Químico / Português: Composto Químico / Français: Composé Chimique / Italiano: Composto Chimico /

A Chemical Compound is a distinct and pure substance formed by the union or two or more elements in definite proportion by weight.

A chemical compound is a substance made up of two or more elements that are chemically combined in a fixed ratio. Chemical compounds can be found in nature or they can be synthesized by humans.

In the context of the environment, chemical compounds can be found in air, water, soil and other natural systems. Some chemical compounds are essential for life, while others can be harmful or toxic.

Examples of chemical compounds that are important in the environment include water (H2O), carbon dioxide (CO2), and oxygen (O2). These compounds are essential for supporting life on Earth and they play key roles in the planet's water cycle, carbon cycle, and oxygen cycle.

Other examples of chemical compounds that can be found in the environment include pollutants such as greenhouse gases (such as methane, CH4), ozone depleting substances (such as chlorofluorocarbons, CFCs), and toxic chemicals (such as lead, Pb). These compounds can have negative impacts on the environment and on human health if they are present in large amounts or if they are not properly managed.