periodic table of elements (PTE) - chart of the elements arranged in rows and columns, group - a column in the periodic table indicating the number of valence electrons, periods - rows in the periodic table indicating the number of energy levels, metal - elements on the left side of the PTE that is generally shiny, pulled into wires, conducts electricity and thermal energy, luster - 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 into sheets, nonmetal - elements on the right side of the PTE that have no metallic properties, are brittle, and do not conduct electricity, noble gases - elements in group 18; only react under special circumstances; very stable, metalloid - elements with properties of both metals & nonmetals and called semiconductors , brittle - the ability to break easily, oxidation - the chemical breakdown of metals in the presence of oxygen,

Periodic Table of Elements

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