-
He believed atoms were the smallest, "uncuttable" pieces of matter.
-
-
He believed that atoms of different elements were different, and atoms of the same elements were the same. All substances are made of atoms.
-
There are small negatively charged atoms in an atom. He conducted the cathode ray experiment. He created the "plum pudding" model.
-
He conducted the gold foil experiment. Atoms contain mostly open space.
-
Electrons travel in certain paths, or energy levels. He discovered neutrons, another kind of particle in the nucleus. Electrons can jump from a path in one level to a path in another.
-
Electron paths can not be predicted.
-
Most of an atom's mass is in the nucleus. Discovered the neutral neutron. There is a small dense positively charged nucleus.
-
Electrons are found in electron clouds not paths.
