Bentor, Yinon. Periodic Table: Oxygen, 1999-2006.
1. www.chemicalelements.com
OVERVIEW:
90% of oceans weight is because of oxygen
Discovery made by Carl Wilhelm Scheele and Joseph Priestley in 1722
Important uses: Living, medicine.
Commercial use: ½ the oxygen produced in the U.S. is for manufacturing of metals.
PHYSICAL PROPERTIES:
colorless
odorless
tasteless
gas
CHEMICAL PROPERTIES:
supports combustion
does not burn by itself
OCCURRENCES IN NATURE:
mainly as an element in the atmosphere
occurs in oceans, lakes, rivers and ice capsin the form of water.
89% of the weight of water is oxygen
Lenntech Water treatment & Air purification. Oxygen-Chemical, Physical, Health and
Environmental effects, 1998-2008.
1. www.lenntech.com
OXYGEN
Gaseous chemical element
needed for respitory system
Used for;
1.
Rocket propulsion
2.
medical uses
3.
Mineing
4.
Production and manufacturing of stone & glass products
*ESSENTIAL FOR ALL LIFE TYPES
Means, Richard. Joseph Priestley: Working with Oxygen, Biography. MAS Ultra-School
Edition, 2006.
Discovered on August 1, 1724
Winter, Mark. Web Elements: the Peridodic Table. The University of Sheffield and
Webelements Ltd, UK, 1993-2008.
1. www.webelements.com
Mars- .15% oxygen
2/3 of human body
9/10 of water
Jefferson Lab. It's Elemental: Oxygen.
1. www.education.jlab.org
Element classification- non-metal
Greek word> Oxys= acid + Genes=forming =Oxygen
Discovered by Joseph Priestley
-Produced by heating mercuric oxide.
OXYGEN:
a) Third most abundant element in the universe
b) Accounts for nearly ½ of the mass of the Earths crust
c) 2/3 the mass of the human body
d) 9/10 the mass of water
Large amounts of oxygen can be extracted from liquified air- prossesof fractional distillation
Can be produced through electrolysis of water or by heating up the potassium chlorate
Needed by living organisms and combustion
Dans, Kevin. Science on File: Oxygen. 2007
"An element on the periodic table with 8 protons and the usually 8 neutrons: this clear, odorless
gas makes up 21% of the Earths atmosphere. Oxygen is very reactive and many organisms obtain
energy by combining oxygen with hydrocarbons."
Knapp, Brian. Elements: Francium to Polonium. Grolier Educational, 2002
Name:Oxygen
Symbol: O
Atomic number: 8
Atomic weight: 15.9995
Position on the Periodic Table: group 6 (16), (oxygen group; chalogen); period 2.
State at room temperature: Gas
Color: colorless as a gas, but pale blue as a liquid.
Density of gas at 20 degrees C: 1.33g/liter
Melting Point: -218.3 degrees C
Boiling Point: 782.9 degrees C