6.1-6.2

Chemical bonding that results from the electrical attraction between cations and anions main-group metals LOSE electrons to form cations nonmetals tend to gain electrons to form negative ions, or anions completely give up electrons

electrical attraction between the nuclei and valence electrons of different atoms that binds the atoms together

sharing of electron pairs between two atoms pure covalent: equally SHARE electrons

subtract lower electro neg by higher electro neg of the atom then 0-3.3 see where it falls above 1.7 considered ionic 1.7 and lower is covalent polar

covalent bond in which the bonding electrons are shared equally by the bonded atoms, resulting in a balanced distribution of electrical charge 0-0.3

uneven distribution of charge 0.3-1.7 partial positive charge, δ+ partial negative charge δ-

neutral group of atoms that are held together by covalent bonds

chemical compound where simplest units are molecules

indicates the relative numbers of atoms of each kind in a chemical compound

types and numbers of atoms combined in a single molecule of a molecular compound eg H2O