Ch4&5 Scientists and their Atomic Models

His model was the first to include negative particles (electrons)

Thomson

His model was the first that said electrons are organized in energy levels. Also, they can lose or gain specific amounts of energy to move from level to level.

Bohr

His model refers to probable electron locations as orbitals or clouds

Schrodinger

Atoms are indivisible, solid spheres

Dalton

Gold Foil Experiment

Rutherford

Did experiments with cathode ray tubes

Thomson

His theory did not include any subatomic particles

Dalton

Plum pudding model

Thomson

First to conclude that all mass and positive charge is located in a very small center (nucleus)

Rutherford

Visualized the atom as a solid + body with electrons embedded in the sphere

Thomson

Visualized electrons moving in concentric, circular orbits (energy levels) around the nucleus

Bohr

His early theory said all atoms of an element are identical and different from atoms of other elements; atoms do not change during chemical reactions - they just rearrange

Dalton

First to conclude that atom is mostly empty space

Rutherford

His model is called the "plum pudding" model

Thomson

His model is nicknamed the "quantum mechanical" model and based on complex mathematical equations.

Schrodinger

Discovered the first subatomic particle

Thomson