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ATOMIC HISTORY
all the people associated with the structure of atomic history
| Term | Definition |
|---|---|
| Democritus | -created the atomos theory -he thought that all matter was composed of small indivisible uncuttable pieces which he named atomos |
| Dalton | -created the Billiard ball model -all elements composed of atoms -atoms of same element are identical -compounds are formed by joining atoms of two or more elements -atoms cannot be created or destroyed, only rearranged, separated or combined |
| Thomson | -created the plum pudding model -atom is composed of electrons scattered throughout a spherical cloud of positive charge |
| Rutherford | -created the gold foil experiment -atoms are mostly empty space -nucleus is small, dense, and positively charged -named subatomic positive particles, protons |
| Bohr | -created the planetary model -electrons orbit around the nucleus like planets orbit the sun -energy is quantized (electrons can only be in certain energy levels) because different electrons are different distances from the nucleus |
| Erwin Schrödinger | -created the quantum mechanical model -electron cloud model -electrons exist in regions of probability called orbitals -energy levels have sublevels -electrons move as waves |
Created by:
cvarella10