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Oxygen

Published on Nov 18, 2015

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PRESENTATION OUTLINE

OXYGEN

Photo by ntr23

THE DISCOVERY OF OXYGEN

  • Oxygen was discovered by
  • more than one person in
  • more than one country.

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THE DISCOVERY OF OXYGEN

  • In 1608, Cornelius Drebbel had shown
  • that heating saltpetre released a gas.
  • This was oxygen although it wasn't
  • identified as such.

THE DISCOVERY OF OXYGEN

  • In 1771, in Sweden, Carl Wilhelm Scheele
  • discovered oxygen and was writing a book
  • which he didn't publish until 1776.

THE DISCOVERY OF OXYGEN

  • In 1774, in England, Joseph Priestley also
  • discovered oxygen, unaware that Scheele
  • had 3 years pervious. Most often it is Priestley
  • that receives credit for discovering oxygen.

THE DISCOVERY OF OXYGEN

  • Even though Scheele and Priestley
  • actually discovered oxygen, it
  • wasn't named by them. In 1777,
  • Antoine Lavoisier from France
  • gave oxygen it's name.

THE ORIGIN OF OXYGEN

  • Oxygen is a Greek word meaning
  • 'acid former'. It was named oxygen
  • because it was believed to be able
  • to form acid.
  • Symbol: O

SOURCES OF OXYGEN

  • Oxygen is everywhere on earth.
  • It makes up 21% of earth's
  • atmosphere.

HOW OXYGEN IS PROCESSED

  • We breathe in oxygen so that it can react with
  • energy stores in our bodies to provide heat
  • and motion that keeps us alive. We return it to
  • the atmosphere as carbon dioxide. It's restored
  • to air by the photosynthesis mechanism of plants.

WHAT OXYGEN IS USED FOR

  • Oxygen used to be an atomic
  • weight standard for comparison
  • of elements.

WHAT OXYGEN IS USED FOR

  • Oxygen is frequently used to aid respiration
  • of patients in hospitals.
  • Oxygen is also used in oxidizing oils.
  • Oxygen can also be used as a rocket fuel oxidant.
  • Oxygen is also used in steel manufacturing.

PROPERTIES OF OXYGEN

  • Physical State: Gas
  • Melting Point: -361.82 (degrees) F
  • Boiling Point: -297.332 (degrees) F
  • Density: 1.429 g/L

PROPERTIES OF OXYGEN

  • Oxygen reacts with lithium, sodium,
  • potassium, and rubidium.

PROPERTIES OF OXYGEN

  • Oxygen supports combustion, combines
  • with most elements, and is a component of
  • hundreds of thousands of organic compounds.
  • Liquid oxygen is blue. Oxygen is fairly soluable
  • in water, making life in rivers, lakes, and oceans possible.

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HOW MUCH OXYGEN IS WORTH

  • It depends on how pure it is.
  • Pure oxygen: 4L = $20