Oxygen+ Hannah


 * Element Name:** Oxygen


 * Element Symbol:** O


 * Atomic Mass:** 16[[image:Oxygen.png width="216" height="288" align="right"]]


 * Atomic Number:** 8


 * Protons:** 8


 * Electrons:** 8


 * Discovery (Who and When):** Joseph Priestley and Carl Scheele, 1774


 * How it was named:** From Greek word "oxy genes" meaning "acid" and "forming"


 * State of matter:** gas


 * Melting Point in:** 218°C


 * Boiling Point:** 182.9°C


 * Three Characteristics:** Colorless, odorless, and tasteless.


 * Use of Element:** breathing, steel manufacture, ozone, oxy-acetylene

Ozone is an allotrope of oxygen.
 * Two Facts:** Oxygen in excited states is responsible for the bright red and yellow-green colors of the aurora borealis.

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