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chapter 3 voc.
voc.
| Term | Definition |
|---|---|
| periodic table | is a chart of the elements arranged into rows and columns according to their physical and chemical properties |
| group | is a column in the periodic table |
| periods | the rows on the periodic table |
| metal | is an element that is generally shiny. It is easily pulled into wires or hammered into thin sheets. A metal is a good conductor of electricity and thermal energy. |
| luster | describes the ability of a metal to reflect light. |
| ductility | is the ability to be pulled into wires |
| malleability | is the ability of a substance to be hammered or rolled into sheets |
| alkali metals | the elements in group 1 |
| alkaline earth metals | the elements in group 2 on the periodic table |
| transition elements | the elements in groups 3-12 |
| nonmetals | are elements that have no metallic properties |
| halogen | an element in group 17 of the periodic table |
| noble gases | the elements in group 18 |
| metalloid | is an element that has physical and chemical properties of both metals and nonmetals |
| semiconductor | conducts electricity at high temperature, but not at low temperatures |