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John Dalton
John Dalton came up with the Atomic Theory. He was very interested in the atmosphere and weather which led to his research of gases which ended up research for his Atomic Theory.
Dalton's Atomic Theory
1) All matter is made of atoms. Atoms are indivisible and indestructible.
2) All atoms of a given element are identical in mass and properties
3) Compounds are formed by a combination of two or more different kinds of atoms.
4) A chemical reaction is a rearrangement of atoms. -
JJ Thomson
JJ Thomson discovered the electron in a series of experiments designed to study the nature of electric discharge in a high-vacuum cathode-ray tube. Thomson interpreted the deflection of the rays by electrically charged plates and magnets as evidence of "bodies much smaller than atoms" that he calculated as having a very large value for the charge-to-mass ratio. Later he estimated the value of the charge itself. -
Ernest Rutherdford
Ernest Rutherford created his atomic theory by describing the atom as having a central positive nucleus surrounded by negative orbiting electrons. Most of the mass of the atom was contained in the small nucleus, and that the rest of the atom was mostly empty space. Rutherford used his famous gold foil experiment. This experiment involved the firing of radioactive particles through minutely thin metal foils and detecting them using screen. -
Neils Bohr’s
He created a new model that proved that the electron was a certain distance from the nucleus. He studdied JJ Thompson and used his theory to find his -
Erwin Schrodingner
Shrodinger used mathmatical equations to find the certain position the electrons are. He called it the quantum mechanical model of the atom. -
Quantum Mechanical Model
It was constructed by Erwin Shrodinger. The equation Δx *Δ(mv) > h/4π is used to find the general area the electron is located. It is not specific because you can never find the exact position of the electrons. It defines the electrons’ movement with relation to the nucleus.
