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Atoms constantly move.
Atoms are “uncuttable.” -
All substances are made of atoms.
Atoms of the same element are exactly alike.
Atoms of different elements are different.
Atoms of the same element are exactly alike.
He conducted experiments in combining elements.
Atoms are small, hard particles. -
He conducted the gold foil experiment.
He conducted experiments in combining elements.
Most of an atom’s mass is in the nucleus.
There is a small, dense, positively charged nucleus.
Atoms contain mostly empty space. -
There are small, negatively charged particles inside an atom.
He conducted the cathode-ray tube experiment.
His theory of the atomic structure led to the “plum-pudding” model. -
Electrons jump between levels from path to path.
Electrons travel in definite paths. -
Electron paths cannot be predicted.
Electrons are found in electron clouds, not paths.
