The Periodic Table

an arrangement of elements in columns, based on a set of properties that repeat from row to row

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NGSS.HS-PS1-1

Russian chemist and inventor, best known for formulating the Periodic Law and creating a version of the periodic table of elements

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a row in a periodic table of elements

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a column of elements in a periodic table

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the pattern of repeating properties displayed by elements in the periodic table

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one-twelfth the mass of a carbon-12 atom; equivalent to the weight of one atomic particle (proton or neutron)

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elements that are good conductors of heat and electric current; Groups 1 and 2 on the periodic table

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NGSS.HS-PS1-1

elements that form a bridge between elements on the left and right sides of the periodic table; Groups 3 - 12 on the periodic table

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elements that are poor conductors of heat and electric current; present in Groups 13 - 17 on the periodic table

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elements with properties that fall between those of metals and nonmetals; located on the "stairs" on the periodic table

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