H2O

H2O is the chemical formula for water, consisting of two hydrogen atoms bonded to one oxygen atom. It’s a vital substance for all known life, acting as a solvent that allows nutrients and chemicals to dissolve and travel through living organisms. Water exists naturally in three states—liquid, ice, and vapor—and plays a crucial role in weather, climate, and ecosystems. Its unique properties, like surface tension and high specific heat, help regulate temperature and support biological functions. In summary, H2O is an essential, versatile molecule fundamental to life and the environment.