Water, a substance composed of the chemical elements hydrogen and oxygen and existing in gaseous, liquid, and solid states. It is one of the most plentiful and essential of compounds. A tasteless and odourless liquid at room temperature, it has the important ability to dissolve many other substances.

Density: 997 kg/m³
Boiling point: 100 °C
Molar mass: 18.01528 g/mol
Formula: H2O
Melting point: 0 °C
IUPAC ID: Water, Oxidane

A body of water or waterbody (often spelled water body) is any significant accumulation of water, generally on a planet’s surface. The term most often refers to oceans, seas, and lakes, but it includes smaller pools of water such as ponds, wetlands, or more rarely, puddles.

W a t e r .