Physical Science

Joseph Priestley

  • discovered Oxygen
  • was discovered in Wiltshire, England in the year 1774
  • Joseph was born on March 12, 1733 and died on February 6, 1804
  • was a philosopher, chemist, theologian and an educator
  • given credit for discovering oxygen for isolating it in its gaseous state

Things You Should Know About Oxygen

  • Has 8 Protons, Neutrons, and Electronts
  • Atomic number is 8 and its atomic mass is 15.9994
  • family group is chalcogens and is in group 16, period is the second row
  • Symbol is O

Physical and Chemical Properties

  • Highly reactive a nonmetallic element
  • colorless, odorless, tasteless
  • formula 02
  • soluble in water
  • Has 9 isotopes, and mixture of 3 isotopes
  • forms about 21% of the atmosphere
  • third most abundant element found in the sun

Where is Oxygen Found? What is it used for?

  • found in water, plants, animals, and soil
  • to breathe
  • used to make acid, sulfuric acid, nitric acid
  • most important of all elements to life
  • makes up one-half of earths crust
  • doesn't bur but supports combustion

Random Fact

  • Carl Scheele also discovered oxygen independently
  • Born December 9,1742 died May 21, 1786
  • pharmaceutical chemist
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