| A | B |
|---|
| ionic | bonding that involves a transfer of electrons |
| proton | positively charged atomic particle |
| molecule | combination of atoms that form a seperate unit |
| atomic mass number | the total number of protons and neutrons in the nucleus |
| atomic number | the number of protons in the nucleus |
| electron | negatively charged atomic article |
| covalent | boning formed by the sharing of electrons |
| element | substances consisting of one type of atom |
| neutron | atomic particle that is electically neutral |
| isotopes | atoms with thr same atomic number but with different mass numbers |
| energy | characteristicsof the series of levels surrounding the nucleus |
