Oxygen is a non-metallic element that is colorless, odorless and tasteless. It has an atomic number of 8 and constitutes 21% of the Earth's atmosphere. Oxygen is vital for animal and plant respiration and is found in water and used in combustion processes. Liquid oxygen is pale blue and has a boiling point of -183°C. It is used as a source of breathing in aircraft and rockets and as an oxidizer in rocket fuels.

1. Oxygen Created by: Corey Maynard Period:1

2. General Information Symbol: O Atomic Number: 8 Atomic mass: 16 Group Name: Chalcogen Group Number:16

3. Classification of Oxygen Boiling point: -297 degrees F (-183 degrees C) Melting point: -361 degrees F (-219 degrees C) Class: Non-Metallic

4. Historical Information Discovered in: 1774 Discovered by: Joseph Priestley and Carl Scheele Discovered at: England and Sweden Word Origin: From the Greek words “oxy genes” meaning “acid” (sharp) and “forming” (acid former)

5. Additional Information. Oxygen is found in over 45% of earths crust Color: None Natural isotopes: 16O, 17O, and 18O Hazards: Pollution

6. Elements Oxygen is in. Gold (Au2O3) Berkelium (BKO3) Platinum (PtO2) Plutonium (PuO2) Curium (CmO2)

7. Uses and Availabilities Breathing (animals need it in air or water) Oxidation (burns) 21% of the atmosphere Most elements Plants and animal respiration Nearly all combustion No hardness or elasticity

8. Liquid Oxygen Symbol: Lox, LOX, lox Color: pale blue Boiling point: 90k (-296 degrees F, -183 degrees C) Freezing point: 51k (-233 degrees C) Expansion ratio: 861:1 at 68 degrees F (20 degrees C) Uses: commercial & military air crafts as source of breathing, rocket fuel

9. Resources http://www.google.com/firefox?client=firefox-a&rls=org.mozilla : http://en.wikipedia.org/wiki/Liquid_oxygenn-US : http://www-safety.deas.harvard.edu/services/oxygen.html http://images.search.yahoo.com/search/images?p=oxygen&toggle=1&cop=mss&ei=UTF-8&fr=yfp-t-701 http://www.answers.com/topic/oxygen