Important Chem Ppl
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| 🇬🇧 | 🇬🇧 |
| Dalton | Proposes theory of matter, named smallest compounds atoms, defined compounds and molecules, chemical properties of atoms, atoms cant be created or destroyed |
| Thomson | Described cathode ray as stream of neg charged particles, made cathode ray w hole in anode and added electrically charged plates and magnets to show deflection of charged particles, plum pudding model (atom w uniform size and distribution of particles w electrons embedded like raisins) |
| Rutherford | Gold foil experiment, proved Thomson wrong, proposed nuclear atom - said atom is mostly empty space w/ dense core (nuclues-most of mass) w/ protons and neutrons, with electrons in surrounding cloud (most of vol), revealed three types of radiation (alpha pos, gamma neut, beta neg), discovered protons |
| Mendelev | Periodic table |
| Millikan | Measured charge of electron, oil drop experiement |
| Becquerel | Discovered radioactivity in uranium |
| Chadwick | Discovered neutrons |