| A | B |
|---|
| chemical bonding | the joining of atoms to form new substances |
| chemical bond | the force of attaction that holds two atoms together |
| valence electrons | The electrons found in the outermost energy level of an atom |
| ionic bond | force of attraction between oppositely charged ions |
| ions | charged particles that form during chemical changes when 1 or more valence electrons transfer from one atom to another |
| covalent bond | the force of attraction between the nuclei of atoms and the electrons shared by atoms |
| molecule | a neutral group of atoms held together by covalent bonds |
| metalic bond | the force of attractions between positively charged metal ion and the electrons in a metal |
| protons and neutrons | these are found in the nucleus |
| positive | the charge of the nucleus |
| negative | the charge on an elecron |
