| A | B |
|---|
| group | elements in the same vertical column of periodic table |
| period | horizontal row in the periodic table |
| metal | an element that gives up a valence electron in a chemical reaction |
| nonmetal | an element that gains electrons in a chemical reaction |
| Alkali metals | teh elements in group one of the periodic table |
| Alkaline earth metals | elements in group 2 of the periodic table |
| Transition metals | the elements in group 3 - 12 |
| Halogens | the element group 17 of periodic table |
| Nobel Gases | Elements in group 18 of periodic table |
| Rare Earth Metal | Elements listed at the bottom of periodic table |
| Characteristic of Metal | easily conduct electricity and heat |
| Characteristic of nonmetal | brittle, do not conduct electricity well |
| Characteristic of Alkali metal | most reactive of metal |
| Characteristic of Alkaline earth metals | very reactive, but not as much as alkali |
| Characteristic of transition metal | complex electron cloud structure, not very reactive |
| Characteristic of halogens | most reactive nonmetal |
| Characteristic of noble gases | 8 valence electrons and are most stable element |
| Rare Earth elements | lanthanides and actinides |
