| A | B |
|---|
| matter is made up of: | atoms, elements, compunds/molecules, .... cells, etc. |
| Continuous Theory | Aristotle, matter can be divided limitlessly |
| Discontinuous Theory | Democritus - matter is made up of small indestructible particles which can't be divided into anything smaller |
| Dalton's theory #1 | elements made of indivisible/indestructible particles called "atoms" |
| Dalton's theory #2 | atoms of the same element are exactly alike |
| Dalton's theory #3 | atoms of different elements have different masses |
| Dalton's theory #4 | compounds are formed by joining 2 or more elements |
| Modern Atomic Theory (MAT) #1 | atoms have many parts and a complex organization |
| MAT #2 | atoms are not indivisible |
| MAT #3 | atoms can be changed from one element to another |
| MAT #4 | atoms of the same element are not exactly alike |
