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| french, law of constant composition/ law of definite proportion, 1800 | ||
| english, first atomic theory law of conservation of mass law of multiple proportion early 1800s | ||
| english, 1899 discovered electron: negative charge charge to mass ratio = 1.76 x 10^8 coulombs/gram | ||
| 1909 mass of electron | ||
| english discovered 3 types of radiation gold foil experiment- nucleus, nucleus is positively charged, atom is mostly empty space | ||
| english 1932- discovered neutrons | ||
| Law of octaves- every 8 elements, chemical and physical properties repeat themselves | ||
| 1910 atomic number | ||
| First credible model of the atom first to place nucleus at center with a positive charge | ||
| can't establish location and velocity of an electron simultaneously, didn't fit with newton | ||
| quantized energy energy is added in chunks like stairs | ||
| wave equations to plot probable point of electron | ||
| fusion is a possible nuclear reaction stars | ||
| made possible the discovery of isotopes measures the mass of isotopes and sorts them |
