Ch. 4

generally hard lustrous elements that are malleable and ductile. readily conduct elevtricity and heat

generally gases or soft solids that do not conduct electricity

elements that have intermediate properties and are sometimes classified as a separate group

horizontal rows of elements in the table

families of elements that fall into vertical columns

pink section

red section

yellow section

where are the chalcogens

green section

brown section

purple section

inorganic compounds composed of just two elements
metal cations and nonmetal anions

when the charge on the metal ion follows the name of the metal in roman numerals and in parentheses

the name of the metal ion that has the lower charge ends in -ous and the higher ends in -ic

anions composed of oxygen and one other element

an ionic compound formed by the combination of a cation with an anion

composed of hydrogen plus one other element

the acids formed by combinationof hydrogen with most of the polyatomic anions

NH₄⁺

OH^-

NO₃^-

NO₂^-

ClO₃^-

ClO₄^-

ClO₂^-

ClO^-

C₂H₃O₂^-

CN^-

CO₃^2-

HCO₃^-

SO₄^2-

HSO₄^-

SO₃^2-

HSO₃^-

PO₄^3-

tetra-

hepta-

nona-