potassium
Instance URI: http://resource.geosciml.org/classifier/cgi/commodity-code/potassium
Within scheme: South Australian Commodity Codes
Potassium is a chemical element with symbol K (from Neo-Latin kalium) and atomic number 19. Elemental potassium is a soft silvery-white alkali metal that oxidizes rapidly in air and is very reactive with water, generating sufficient heat to ignite the hydrogen emitted in the reaction and burning with a lilac flame.