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