So, what is water?
According to Wikipedia, water is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance.
Water is vital for all known forms of life, even though it provides no calories or organic nutrients. It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms.
Its chemical formula is H2O, meaning that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds.
Find out more
- → Read the full Wikipedia page
- → Study Water For Life for free with the Open University
- → Check out the BBC Bitesize lesson on water for intermediate school children