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vocab 3
vocab for chapter 3
| Term | Definition |
|---|---|
| Periodic table | a chart of elements arranged into rows and columns according to their physical and chemical properties |
| group | a column on the periodic table |
| periods | rows on the periodic table |
| metal | an element that is generally shiny |
| luster | describes the ability of a metal to reflect light |
| ductility | the ability to be pulled into thin wires |
| malleability | the ability of a substance to be hammered or rolled into sheets |
| alkali metals | elements in group 1 |
| alkaline earth metals | elements in the 2nd group |
| transition elements | elements in groups 3-12 |
| nonmetals | elements that have no metallic properties |
| halogen | elements in group 17 |
| noble gases | elements in group 18 |
| metalloid | an element that has physical and chemical properties |
| semiconductor | conducts electricity at high temperatures |