| A | B |
|---|
| metals | the elements that are good conductors of heat and electricity |
| nonmetals | elements athat are poor conductors of heat and electricity |
| semiconductors | the elements that are intermediate conductors of heat and electricity |
| alkali metals | highly reactive metallic elements in Group One |
| alkaline-earth metals | the reactive metallic elements located in Group Two |
| transition metals | metalic elements located in Groups Three - Twelve |
| Group One | position of Alkali metals |
| Group Two | position of alkaline-earth metals |
| middle of period table | position of transition metals |
| right side of period table | position of non-metals |
| example of an alkaline-earth metal | calcium |
| example of an alkali metal | sodium |
| examples of transition metals | gold, silver and platinum |
| examples of non-metals | oxygen and nitrogen |
| halogens | highly reactive elements in group seventeen |
| example of a halogen | chlorine |
| noble gases | unreactive gaseous elements in Group 18 |
| example of a noble gas | neon |
| example of a semiconductor | silicon |
