study guide

Symbols for the first 20 elements (50) Structure of the atom Numbers of P+, e-, n0 in elements isotopes and neutrons Anions gain electrons to fulfill octet rule Cations lose electrons to fulfill octet rule Chemical changes/properties Significant figures Physical states / changes / names of state changes Names of groups Numbers of the Energy levels Charges associated with elements in each group Names of blocks s, p, d, f Periodic trends Covalent vs ionic bonds Properties of molecular substances Properties of ionic substances Lewis dot structures of small common molecules Molecular geometry Polar vs nonpolar