1. Name to Formula (Copper(II) Sulfate  CuSO 4 ) There are two names, the second name ends in –ide - Exceptions are hydroxide, cyanide and bisulphide… these are PAI Legend: M = MetalPT = Periodic Table NM = NonmetalGP = greek prefixes (Mono, di-, tri-, terta-, penta-, hexa-, hepta-, octa-, nona-, deca-) RN = Roman Numeral (I, II, III, IV, V, VI…)DB = Data booklet CC= Combining Capacity (more than one charge, metal is multivalent) More than 2 names or second name ends in –ate, or –ite (Exceptions are hydroxide, cyanide and bisulphide) Acid First name is a M = ionic compound Exception= Ammonium (NH 4 + ) Metal has more than one CC Metal has only one CC First name is a NM = Covalent molecule RN No RN Write out the symbols for each ion. The M’s CC is the RN, obtain the NM CC from the PT Criss cross the CC, reduce if possible) Ex.) hydrochloric acid H +1 Cl -1 HCl Write out the symbols for each ion, look up the M’s CC from the PT, obtain the NM CC from the PT Criss cross the CC, reduce if possible Ex.) Calcium oxide Ca +2 O -2 Ca 2 O 2 CaO The GP become the subscripts for that NM * Do not criss cross or reduce Ex.) dinitrogen trioxide N 2 O 3 First name is a M and the 2 nd name is a PAI (ends in –ate, -ite… see DB) Metal has more than one CC RN No RN Metal has only one CC Write out the symbols for each ion, the M’s CC is the RN, obtain the PAI CC from the DB If the M’s CC is greater than 1, put brackets around the PAI. Criss cross the CC, reduce if possible Ex.) iron(II) phosphate Fe +2 (PO 4 ) -3 Fe 3 (PO 4 ) 2 Write out the symbols for each ion, look up the M’s CC from the PT, obtain the PAI CC from the DB If the M’s CC is greater than 1, put brackets around the PAI. Criss cross the CC, reduce if possible Ex.) Magnesium Nitrite Mg +2 (NO 2 ) -1 Mg(NO2) 2 Hydro___ NM’s name )____ -ic acid Binary acid, just an H and a NM Write out the symbols for each ion, look up the CC from the PT Criss cross the CC Ex.) copper(II) chloride Cu +2 Cl -1 CuCl 2 _____________-ic acid PAI name ended in – ate and was changed to -ic Write out the symbols for each ion, look up the CC from the PT and DB Criss cross the CC Ex.) phosphoric acid Phosphoric was phosphate H + PO 4 -3 H 3 PO 4 _____________-ous acid PAI name ended in –ite and was changed to - ous Write out the symbols for each ion, look up the CC from the PT and DB Criss cross the CC Ex.) Nitrous acid Nitrous was nitrite H + NO 2 -1 HNO 2 First word is Ammonium NH 4 + + PAI or NM Criss Cross CC If PAI or NM CC is greater than 1, put brackets around (NH 4 ) + Look up NM or PAI symbol and CC Ex.) Ammonium Chlorate NH 4 + ClO 3 - NH 4 ClO 3

2. Formula to Name (CuSO 4  Copper(II) Sulfate) 2 elements (2 capital letters) Legend: M = MetalPT = Periodic Table NM = NonmetalGP = greek prefixes (Mono, di-, tri-, terta-, penta-, hexa-, hepta-, octa-, nona-, deca-) RN = Roman Numeral (I, II, III, IV, V, VI…)DB = Data booklet CC= Combining Capacity (more than one charge, metal is multivalent) More than 2 elements (more than 2 capital letters) M + PAI or PAI + NM Acid M + NM = ionic compound Will need a RN in name NM + NM = covalent molecule M has more than 1 CC M has only 1 CC Uncross the subscripts, determine the CC on the M by looking at the NM CC. If the NM CC is correct, the M CC is correct. If the NM CC is not correct, then the CC’s were reduced. Multiply both CC’s by the same # to obtain correct NM CC The M’s CC needs to be made into a RN and is placed after the M name Ex.) HCl hydrochloric acid Ex.) CaO calcium oxide Name both NM’s as they appear on the PT BUT -The 2 nd NM’s name ends in –ide an d -The subscripts in front of each Nm become GP’s in front of their names Ex.) N 2 O 3 dinitrogen trioxide M + PAI NH 4 + + NM Name the PAI as it appears in the DB and name the Nm, but change the ending to -ide Ex.) Fe 3 (PO 4 ) 2 Fe +2 (PO 4 ) -3 -3 on the PAI is correct iron(II) phosphate Ex.) Mg(NO 3 ) 2 Magnesium Nitrite Only 2 elements (2 capitals) = Binary Acids H + NM Ex.) CuCl 2 Cu +2 Cl -1 Cl -1 is correct copper(II) chloride 3 or more elements (or capitals) and the PAI name ends in -ate Change the PAI name from –ate to -ic Ex.) H 3 PO 4 Phosphate is changed to phosphoric phosphoric acid _____________-ous acid 3 or more elements (or capitals) and the PAI name ends in -ite Change the ending from –ite to -ous Ex.) HNO 2 Nitrite is changed to nitrous Nitrous acid Name the M and NM as they appear on the PT changing the NM ending to -ide M has more than 1 CC M has only 1 CC Will need a RN in name Uncross subscripts, determine the CC on the M by looking at the PAI CC. If the PAI CC is correct, the M CC is correct If the PAI CC is not correct, then the CC’s were reduced. Multiply both CC’s by the same # to obtain correct PAI CC The M’s CC needs to be made into a RN and is placed after the M name, the PAI’s name is written as it appears in the DB Name the M and PAI as they appear on the PT/DB E.) (NH 4 ) 2 O Ammonium Oxide Hydro___ NM’s name )____ - ic acid _____________-ic acid