| A | B |
|---|
| Chemical bonding | the joining of atoms to form new substances |
| Chemical bond | a force of attraction that holds two atoms together |
| Valence electrons | the electrons in the outermost energy level of an atom |
| Ionic bond | the force of attraction between oppositely charged ions |
| Ions | charged particles that form during chemical changes when one or more valenece electrons transfer from one atom to another |
| Crystal lattice | a repeating three-dimensional pattern of ions |
| Covalent bond | the force of attraction between the nuclei of atoms and the electrons shared by the atoms |
| Molecule | a neutral group of atoms held together by covalent bonds |
| Metallic bond | the attraction between a positively charged metal ion and the electrons in a metal |
