is an inorganic, transparent, tasteless, odorless, and nearly colorless substance, which is the main constituent of Earth‘s hydrosphere and the fluids of all known living organisms.

” is the name of the liquid of H2O at standard conditions for temperature and pressure.

It is vital for all known forms of life, even though it provides no calories or  nutrients.

Its  formula H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds.

The atoms are attached to the at an angle of 104.45°.