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by teacher: Mrs. Freitas
Blog Entries

OXYGEN
I chose oxygen because it’s what we breathe and I thought it was interesting.
Oxygen was discovered by Joseph Priestly in 1774. The atomic number: 8, the atomic mass: 15.9994 AMU. The melting point is: -218.4˚C (54.750008 k, -361. 12 ˚F) The Boiling point is: -183.0 ˚C (90.15 k,-297.4˚F) Oxygen does not have a Freezing point.
Joseph Priestly was born: March 13, 1733 in a country near England. He died February 6, 1804. Joseph was in the fields of science.

HELIUM
I chose helium because its one of the dangerous elements.
Helium was discovered by Sir William Ramsay in 1895. The atomic number is 2, the atomic mass: 4.002602 AMU. The melting point is: - 272.0 ˚C (1.15 k, -457.6˚F). The Boiling point is: -268.93. Helium does not have a freezing point because it is a gas.
Helium was discovered by Sir William Ramsay. Sir William Ramsay was born October 2, 1852. He died July 23, 1916.
He will be remembered forever

SODIUM
I chose sodium because I thought it was interesting.
Sir Humphrey Davey discovered sodium. The atomic number of sodium is 11. The symbol of sodium is NA. The melting point of sodium is 97.81. The boiling point is 882.9˚C. Sodium is used in glass. It is created in nature.


Article posted May 22, 2012 at 12:35 PM • comment • Reads 56 • see all articles

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