Atomic History (After TedEd)

First to day that everything was made up of tiny particle called atoms.

Stated that compounds are made up of atoms of specific elements in a fixed ratio.

Discovered the electron.

Match the model with the scientist.

Put the models of the atom in order from 1 (earliest) to 5 (most recent).

Put the definition of the structure atom in order from 1 (earliest) to 5 (most recent).

Said that atoms are positive spheres with negative electrons sprinkled throughout.

Conducted the "Gold Foil" Experiemnt

In the gold foil experiment, most of the alpha (positive) particles​ (a)   the atom proving it was ​ (b)   , but some of the particles ​ (c)   which showed that the atom had a ​ (d)   nucleus at the center that contained most of the ​ (e)   of the atom.

Found that electrons orbit the nucleus in fixed energy levels.