-
This happened in 202 B.C exact date not recorded
-
He lived 460 B.C through 370 B.C. He was born in Ancient Greece, there i no date of discoveries. He was the first though to propose the existence of an ultimate particle and used the word "atomos" to describe this particle.
exact date not recorded -
exact date unknown
-
He died in 1682 and he developed the Phlogiston theory in 1670. He was born in the Holy Roman Empire.
-
He died in 1734 and he also helped develop the Phlogiston theory in 1670. He was born in Germany.
-
exact date unknown
-
He died in 1804 and he dicovered oxygen in 1774. Lastly he was born in Birstall, United Kingdom
-
-
He died in 1907 and developed the first periodic table in 1869. He was born in Tobolsk,Russia.
-
He died in 1937 and he proposed the nuclear atom as the result of the gold foil experiment in 1911. He was born in Brightwater, New Zealand.
-
He died in 1945 and he was the inventor of the mass spectograph and also the first to observe isotopes. He was born in Harborne, United Kingdom.
-
He died in 1961 and in 1926 he described how electrons move in a wave form. He was born in Vienna,Austia.
-
He died in 1974 and dicovered the neutron in 1932. He was born in Bollington, United Kingdom.
-
exact date unknown
-
It is also reffered to as the chocolate chip or blueberry muffin model. It was created by J.J. Thompson (also discovered electons). Lastly it was created to show how elements are neutral.
Exact date unknown -
He died in 1976 and he discovered a way to formulate quatum mechanics in terms of matrices. He was born in Wurzburg, Germany.
-
exact date unknown
-
Model that has a positively charged nucleus surrounded by a negatively charged electrons arranged similar to the solar system.
exact date unknown -
This is the most modern model and describes how electrons don't have a fixed path. this was developed by Erwin Schrodinger and Werner Heisenberg.
-
exact date unknown
-
exact date unknown
-
-
no exact date
-
-
this happened in 269 B.C
exact date not recorded
