Potassium


 * Element Name**: Potassium


 * Element Symbol**: K


 * Atomic Mass**: 39[[image:Potassium.png width="216" height="288" align="right"]]


 * Atomic Number**: 19


 * Protons**: 19


 * Electrons**: 19


 * Discovery**: discovered by Sir Humpry Davis in 1807


 * How It Was Named**: It comes from the English word 'potash'. Potassium's chemical symbol comes from the Latin word for alkali, kalium.


 * State of Matter**: Solid


 * Melting Point**: 63°C


 * Boiling Point**: 759°C


 * Characteristics**:
 * Potassium is one of the most reactive and electropositive metals
 * It is the least dense known metal
 * Has a silvery white color to it
 * Soft and easily cut with a knife


 * Uses of Element**:
 * Fertilizers
 * Fireworks
 * Low-sodium salt


 * Interesting Facts**:
 * Potassium can take oxygen from paper
 * You can create a mirror using potassium

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