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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 |