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chapter 3 vocab.
Term | Definition |
---|---|
periodic table | is a chart of the elements arranged into row and columns according to their physical and chemical properties |
group | is a column on the periodic table |
periods | rows on the periodic table |
metal | is an element that is generally shiny |
luster | describes the ability of a metal to reflect light |
ductility | is the ability to be pulled into thin wires |
malleability | is the ability of a substance to be hammered or rolled into sheets |
alkali metal | the element in group 1 |
alkaline earth metal | the elements in group 2 on the periodic table |
transition elements | the element in groups 3-12 |
nonmetal | 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 metal and nonmetal |
semiconductor | conducts electricity at high temperatures, but not at low temperatures |