| A | B |
|---|
| Dalton | Developed the model of atomic theory of matter |
| Thomson | Scientist who discovered electrons |
| Rutherford | Scientist who showed that wood and oxygen combine during burning |
| Chadwick | Scientist who discovered neutrons |
| proton | positively charged particle |
| neutron | uncharged particle |
| electron | negatively charged particle |
| matter | Has mass and takes up space |
| nucleus | the central part of the atom that contains the protons and neutrons |
| Law of Conservation | matter can neither be created nor destroyed |
| atoms | Most matter is made up of these small particles |
| cloud | electrons move in what is called an atom's |
