Water (H₂O)

Water (H₂O) is a chemical compound composed of two hydrogen atoms bonded to one oxygen atom. It is essential for all living organisms, serving as a solvent that helps carry nutrients and waste. Water exists naturally in three states: liquid, solid (ice), and gas (vapor). Its unique properties, like high surface tension and ability to dissolve many substances, support various biological, environmental, and industrial processes. Water covers about 71% of Earth's surface, playing a crucial role in climate regulation, weather patterns, and sustaining ecosystems.