Electronic Theory
Published on Nov 19, 2015
No Description
MORE DECKS TO EXPLORE
PRESENTATION OUTLINE
MODERN THEORY
- Electron path cannot be predicted
- Electrons are found in electron clouds, not path
BOHR
- Electrons jump between levels from path to path.
- Electrons travel in definite paths.
RUTHERFORD
- Most of an atom's mass is in the nucleus.
- He conducted the gold foil experiment.
- Electrons move in empty space in the atom.
- Atoms are mostly empty space.
- There is a small, dense, positively charged nucleus
THOMSON
- Elements combine in specific proportions.
- His theory of atomic structure led to the "plum pudding" model
- He conducted the cathode-ray tube experiment
DALTON
- There are small, negatively charged particles inside an atom
- Atoms of different elements are different
- Atoms of the same element are exactly alike
- He conducted experiments combining elements
DEMOCRITUS
- Atoms are "uncuttable"
- Atoms constantly move.
- Atoms are small, hard particles.
- All substances are made of atoms
