| A | B |
|---|
| atom | smallest unit of an element with all the properties of that element |
| compound | substance made up of the atoms of two or more elements |
| electron | subatomic particle with a negative charge |
| element | substance made up of only one kind of atom |
| molecule | two or more atoms joined together |
| neutron | subatomic particle with no charge |
| nucleus | center of an atom |
| Periodic Table | arrangement of elements by similar properties |
| proton | subatomic particle with a positive charge |
| electron & protons | positives and negative attraction of these holds atoms together |
| atomic number equals | the number of protons |
| arrangement of elements in periodic chart is based on | atomic # and similar properties |
| properties of metals | ductile, conduct heat, conduct electricity |
