Influential chemists and the contribution to the understanding of the atom

John Dalton birth

Sep 6, 1766

America declares independence

Jul 4, 1776

Dalton gas experiment

Oct 5, 1803

In this experiment he measured the amount of water vapor that the air could hold. From this experiment he created his atomic model

John Dalton death

Jul 27, 1844

JJ thomson Born

Dec 18, 1856

Start of the american civil war

Apr 12, 1861

Ernest Rutherford birth

Aug 30, 1871

Niels Bohr birth

Oct 7, 1885

JJ thomson cathode ray experiment

Dec 18, 1897

Because of this experiment he discoverd the electron and also made the plum pudding model

Rutherford gold foil experiment

Jul 4, 1909

this was a group of experiments which involved shooting alpha particles at gold foil. This experiment led Ernest Rutherford to hypothesize that there was a nucleus and also helped him make his model of the atom

Bohr Model

Oct 5, 1913

Bohr Hypothesized that Rutherford's model would not work because if an atom was formed looking behaving like Rutherford's model suggests then the atom would collapse so he made his own model

Ernest Rutherford death

Oct 19, 1937

Start of world war two

Sep 1, 1939

JJ Thomson death

Aug 30, 1940

Niels Bohr death

Nov 18, 1962