Wanted: Potassium (K)

By: Katherine Bailey

Nickname: Pot- Ash


Potassium has many different physical features.
  • Protons- 19
  • Neutrons- 20
  • Electrons-19
  • K is the symbol for potassium
  • Atomic number- 19
  • Atomic mass- 39.1
  • Solid (at room temperature)
  • Slivery- white metal
  • Density- .86 grams/cc
  • Melting point- 64.48 degrees Celsius
  • Boiling point- 759 degrees Celsius
  • Reactive to metal
  • Does not have smell
Be on the lookout for any element that matches this description!

Where Can Potassium Be Found

Potassium can be found in various place and it has very many uses. First, it is the 19th element on the periodic table, and it is in the first group. Potassium is never found in its native state; only in a compound. Also 1.5% of the Earth's crust is made of potassium. It is the 7th most common element in the world. Potassium is found in plants, the sea, most volcanic (igneous) rocks, in our cells, and in most of our food.

Some of its uses include:
  • Gunpowder
  • Glass Making
  • Soap
  • Laundry Detergent
  • Fertilizer
  • Nuclear Reactions
  • Fireworks
  • Salt
  • Industrial Chemical

Partners in CRIME

Potassium works with many partners (compounds) during crime.
  • Hydrides (KH)
  • Fluorides (KF)
  • Chlorides (KCl)
  • Iodides (KI)


Potassium was first discovered in 1806 in the Royal Institution, which is located in London, England. The element was discovered by Sir Humphry Davey and assisted by Edmund Davy. Then Potassium was first isolated in 1807. Potassium was the first metal to be isolated.


  • "Potassium: Compounds Information." Potassium»compounds Information [WebElements Periodic Table]. N.p., n.d. Web. 27 Sept. 2015.
  • "Periodic Table and the Elements." Chem4Kids.com: Elements & Periodic Table. N.p., n.d. Web. 27 Sept. 2015.
  • "The Periodic Table." Periodic Table of Elements and Chemistry. N.p., n.d. Web. 27 Sept. 2015.
  • "Potassium." - Element Information, Properties and Uses. N.p., n.d. Web. 27 Sept. 2015.
  • Knapp, Brian. Sodium and Potassium. Danbury, CT: Grolier Educational, 1996. Print.
  • Knapp, Brian. Potassium to Zirconium. Danbury, CT: Grolier Educational, 2002. Print.