| A | B |
|---|
| periodic law | law that states properties of elements are periodic |
| group | vertical column of elements also called a family |
| family | vertical column of elements also called a group |
| period | horizontal row of elements |
| metal | an element that is a good conductor of electricity and heat |
| nonmetal | element that is a poor conductor of electricity and heat |
| metalloid | an element that has properties of both metals and nonmetals |
| luster | shininess |
| malleable | able to be hammered into a thin sheet |
| corrosion | gradual wearing away of a metal due to a chemical reaction |
