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Properties of My Element: Oxygen
Transcript
Properties of My Element: Oxygen
Discovered in 1774 in England and Sweden
by Joseph Priestley and Carl Scheele
Symbol: O
Atomic Number: 8
Atomic Mass: 15.9994
Interesting Facts:
- Oxygen in excited states is responsible for the bright red and yellow-green colors of the aurora.
- Oxygen is produced primarily by high-mass stars when they fuse helium in oxygen and carbon; this oxygen gets ejected into the galaxy when the star explodes as a supernovae.
2 Chemical descriptions of Oxygen
combustible (flammable)
highly active (excitable)
3 Physical Properties of Oxygen:
colorless
tasteless
odorless
Oxygen is used in the real world for patients breathing and in welding.
Oxygen can be found in the atmosphere and in the Earth's crust.
Three common compounds containing Oxygen
water
hydrogen peroxide
bleach
Natural state of element: gas
Melting point: 54.8 degree Kelvin
Boiling point: 90.19 degree Kelvin
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