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3.1-3.3 vocab
Voc lesson 1-3 ch 3
Term | Definition |
---|---|
periodic table | a chart of the elements arranged into rows and columns according to their physical and chemical properties. |
group | a column on the periodic table. |
period | a row on the periodic table. |
metal | an element that is generally shiny, is easily pulled into wires or hammered into thin metal sheets, and is good conductor of electricity and thermal energy. |
luster | the way a mineral reflects or absorbs light at its surface. |
ductility | the ability to be pulled into thin wires. |
malleability | the ability of a substance to be hammered or rolled into sheets. |
alkali metal | an element in group 1 on the periodic table. |
alkali earth metal | an element in group 2 on the periodic table. |
transition element | an element in groups 3-12 on the periodic table. |
nonmetal | an element that has no metallic properties. |
halogen | an element in group 17 on the periodic table. |
noble gas | an element in group 18 on the periodic table. |
metalloid | an element that has physical and chemical properties of both metals and nonmetals. |
semiconductor | a substance that conducts electricity at high temperatures but not at low temperature. |