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Science Ch 10 Vocab


periodic table chart of the lements arranged into rows and columns according to their physical and chemical properties
group a column on the periodic table
period rows on the periodic table
alkali metal elements in group 1
nonmetal elements that have no metallic properties
metalloids an element that has physical and chemical properties of both metals and nonmetals
valence electron an outermost electron of an atom that participates in chemical bonding
electron dot diagram model that represents valence electrons in an atom as dots around the element's chemical symbol
covalent bond
molecule group of atoms held together by covalent bonding that acts as an independent unit
polar molecule molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons
ion an atom that is no longer electrically neutral because it has lost or gained valence electrons
ionic bond attraction between positively and negatively charged ions in an ionic compound
Created by: 2018grellerj