-
Democritus discovered the atom. He named an atom an "atom" because in greek it means "indivisible".
-
Established the oxygen theory of combustion and many more.
-
John Dalton discovered and developed the first useful atomic theory of matter.
-
John Dalton discovered and created the Dalton theory of mater which is now some what used today.
-
Know for the forming of the periodic table and predicting some future elements on the table.
-
J.J. Thompson discovered electrons because of cathode rays.
-
Established the true scientific basis of the periodic table.
-
Discovered by J.J. Thompson when his experiment showed that rays were emitted from negativley charged cathodes which were made up of negatively charged particles that came from inside the atom.
-
Robert Millikan measured the charge of an electron using the experiment called: The oil-drop experiment.
-
Rutherford discovered the nuclear model of the atom.
-
The gold foil experiment is an experiment Rutherford did to lead to his discovery of the nucleus. This experiment consisted of Rutherford to shooting alpha particles at a thin piece of gold foil, he then found that some particles bounced backwards instead of going straight through the gold.
-
The model is also described as tiny, dense, positively charged and is center of the atom.
-
Bohr revised Rutherfords model and discovered energy levels in an atom.
-
Bohrs model is actually is a simpler theory of quantum mechanics.
-
The electron cloud model is a model of an atom where as instead of seeing each electron, they are clouds. When Schrödinger and Heisenbergr discovered this they decided to use clouds becuase it made more sense since we dont know exactly where an electron is all the time.
-
Schrodinger established the correctness of the Schrodingers equation.
-
Chadwick proved the existence of neutrons.
-
The quatnum mechanical model is actually based on the qauntum theory and you also can never tell when and where an electron is in an exact second.
