| Term | Definition |
| Proust | Law of definite proportion |
| Lavoisier | Law of conservation of mass |
| Dalton | Law of multiple proportions |
| Dalton | Atomic theory |
| Dalton | Law of partial pressures of gasses |
| Avogrado | Avogrado's hypothesis |
| Gay-Lussac | Compared the volume of gases that react together and the volume of gaseous products formed |
| millikan | Millikan's oil drop experiment |
| Rutherford | disovered the nucleus |
| Rutherford | disovered the proton |
| thomson | discovered electrons |
| thomson | cathode ray tube |
| currie | discovered radium |
| lavoisier | His work on oxidation of metals led him to discover the role of oxegen in oxidation (which he named) |
| avogrado | at the same temperature and same pressure, equal volumes of different gases contain the same number of particles |