Atoms are made of a single material formed into different shapes and sizes.
He conducted experiments in combining elements.
Atoms are small, hard particles.
Atoms are “uncuttable.”
Atoms of different elements are different.
All substances are made of atoms.
He wanted to know why elements combine in specific proportion.
Atoms of the same element are exactly alike.
His model had electrons surrounding the nucleus at a distance.
There are small, negatively charged particles inside an atom.
He conducted the cathode-ray tube experiment.
His theory of atomic structure led to the “plum-pudding” model.
There is a small, dense, positively charged nucleus.
Atoms contain mostly empty space
He conducted the gold foil experiment.
Most of an atom’s mass is in the nucleus.
Electrons can jump from a path in one level to a path in another level.
Electrons travel in certain paths or energy levels.
He discovered another particle in the nucleus of atoms.
He discovered the neutral neutron.
Electron paths cannot be predicted.
Electrons are found in electron clouds, not path.