Water Mixer Drinks - the liquid that descends from the clouds as rain forms streams, lakes, and seas, and is a major constituent of all living matter. It is an odorless, tasteless, colorless, very slightly compressible liquid. H2O. A chemical compound which is essential for living organisms. A solid form of water, ice, is essential for halos. Freezing point is at 0Â°C and boiling point is at +100Â°C.