Origin of potassiumModL: so named from potassa from Dutch potasch, potash, by Sir Humphry Davy, who first isolated it from potash
- Its symbol is K, which is Latin for kalium.
- It has an atomic number of 19.
- Potassium reacts violently to water which makes hydrogen. During the process, there is enough heat generated to ignite the hydrogen.
- Before the 19th century, it was thought that sodium and potassium were the same.
- In nature, potassium is found in ionic salts, just like sodium.
- It is a very soft, light silvered colored metal that tarnishes quickly in air into a gray color.
- When it is burned, the flame is a light purple.
- Most of the potassium produced in the world is used by the fertilizer industry.
- It helps the nerves and muscles do their job, to maintain the proper acid-base balance, and can lower blood pressure.
- Some medications interfere in potassium levels including ACE inhibitors, Heparin, Bactrim or Septra, Cyclosporine, Beta Blockers and non-steroidal anti-inflammatory drugs or NSAIDs.
The definition of potassium is an alkali metal.
Facts About Potassium
An example of potassium is the mineral found in dried apricots and raisins.
a soft, silver-white, waxlike metallic chemical element, one of the alkali metals, that oxidizes rapidly when exposed to air: it occurs abundantly in nature in the form of its salts, which are used in fertilizers, glass, etc.: symbol, K; at. no. 19
A soft, silver-white, extremely reactive element that is an alkali metal, is essential to plant and animal cell functions, and occurs in nature only in compounds. It can be obtained by electrolysis of its hydroxide and is found in, or converted to, a wide variety of salts used especially in fertilizers and soaps. Atomic number 19; atomic weight 39.098; melting point 63.5°C; boiling point 759°C; specific gravity 0.86; valence 1. See Periodic Table.
Origin of potassiumFrom earlier potass potash ( from which it was first obtained ) from French potasse from Dutch potas pot pot ( from Middle Dutch) (Old English pott ) as ash ( from Middle Dutch asche ; see as- in Indo-European roots.)
A soft, highly reactive, silvery-white metallic element of the alkali group occurring in nature only in compounds. It is essential for the growth of plants and is used especially in fertilizers and soaps. Atomic number 19; atomic weight 39.098; melting point 63.65°C; boiling point 774°C; specific gravity 0.862; valence 1.
See Periodic Table
potassium - Medical Definition
A soft, silver-white, extremely reactive element that is an alkali metal, is essential to plant and animal cell functions, and occurs in nature only in compounds. It can be obtained by electrolysis of its hydroxide and is found in, or converted to, a wide variety of salts used especially in fertilizers and soaps. Atomic number 19; atomic weight 39.098; melting point 63.5C; boiling point 759C; specific gravity 0.86; valence 1; symbol K.
- It is slightly soluble in potassium sulphide.
- The yellow precipitate obtained is washed with a solution of potassium acetate and finally with dilute alcohol.
- On oxidation with potassium permanganate it is converted into acetyl urea, together with other products.
- It is insoluble in dilute acids, but is readily soluble in excess of potassium cyanide.
- They are soluble in water and give characteristic precipitates with platinic and auric chlorides, and with potassium ferrocyanide.