OXYGEN

THE DISCOVERY OF OXYGEN

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

Untitled Slide

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.

Untitled Slide

HOW MUCH OXYGEN IS WORTH

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