-
460
Early Greek Models - Democritus
*460 BC - 370 BC* -
Period: 460 to
Chemistry
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Jan 1, 1500
Medieval Alchemy
*16th century* -mixture of science, philosophy and mysticism
- try to discover the relationship of man to cosmos
- they identified arsenic, antimony, and bismuth first
- produced hydrochloric acid, nitric acid, potash & sodium carbonate
- is a foundation for chemistry as a scientific discipline
- through their experiments, medieval alchemists invented and developed labratory devices and procedures that are, in modified form, used today -
John Dalton
*September 6th 1766 - July 27th 1844* -
Henri Becquerel
*December 15th 1852 - August 25th 1908* -
J.J. Thomson
*December 18th 1856 - August 30th 1940* -
Pierre Curie
*May 15th 1859 - April 19th 1906* -
Marie Curie
*November 7th 1867 - July 4th 1934* -
Ernest Rutherford
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Niels Bohr
*October 7th 1885 - November 18th 1962* -
James Chadwick
*October 20th 1891 - July 24th 1974*