Name to Formula (Copper(II) Sulfate  CuSO 4 )

1. Name to Formula (Copper(II) Sulfate  CuSO4) There are two names, the second name ends in –ide - Exceptions are hydroxide, cyanide and bisulphide… these are PAI More than 2 names or second name ends in –ate, or –ite (Exceptions are hydroxide, cyanide and bisulphide) Acid First name is a M and the 2nd name is a PAI (ends in –ate, -ite… see DB) First name is a M = ionic compound Exception= Ammonium (NH4+) Hydro___NM’s name)____ -ic acid _____________-ic acid _____________-ous acid First name is a NM = Covalent molecule RN PAI name ended in –ite and was changed to -ous No RN First word is Ammonium PAI name ended in –ate and was changed to -ic Binary acid, just an H and a NM Metal has more than one CC RN The GP become the subscripts for that NM * Do not criss cross or reduce NH4+ + PAI or NM No RN Metal has only one CC Metal has more than one CC Write out the symbols for each ion, look up the CC from the PT Look up NM or PAI symbol and CC Write out the symbols for each ion, look up the CC from the PT and DB Metal has only one CC Write out the symbols for each ion, look up the CC from the PT and DB Write out the symbols for each ion, the M’s CC is the RN, obtain the PAI CC from the DB Write out the symbols for each ion, look up the M’s CC from the PT, obtain the PAI CC from the DB Ex.) dinitrogen trioxide N2O3 Write out the symbols for each ion. The M’s CC is the RN, obtain the NM CC from the PT If PAI or NM CC is greater than 1, put brackets around (NH4)+ 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 Criss cross the CC Criss cross the CC If the M’s CC is greater than 1, put brackets around the PAI. Criss cross the CC, reduce if possible Ex.) hydrochloric acid H +1 Cl-1 HCl Ex.) phosphoric acid Phosphoric was phosphate H+ PO4-3 H3PO4 Ex.) Nitrous acid Nitrous was nitrite H+ NO2-1 HNO2 If the M’s CC is greater than 1, put brackets around the PAI. Criss cross the CC, reduce if possible Criss Cross CC Criss cross the CC, reduce if possible) Ex.) Ammonium Chlorate NH4+ ClO3- NH4ClO3 Criss cross the CC, reduce if possible Ex.) copper(II) chloride Cu +2 Cl-1 CuCl2 Ex.) iron(II) phosphate Fe +2 (PO4)-3 Fe3(PO4)2 Ex.) Calcium oxide Ca +2 O-2 Ca2O2 CaO Ex.) Magnesium Nitrite Mg +2 (NO2)-1 Mg(NO2)2 Legend: M = Metal PT = Periodic Table NM = Nonmetal GP = 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)

2. Formula to Name (CuSO4  Copper(II) Sulfate) 2 elements (2 capital letters) More than 2 elements (more than 2 capital letters) M + PAI or PAI + NM Acid M + NM = ionic compound NM + NM = covalent molecule Only 2 elements (2 capitals) = Binary Acids H + NM NH4+ + NM 3 or more elements (or capitals) and the PAI name ends in -ate 3 or more elements (or capitals) and the PAI name ends in -ite M + PAI M has more than 1 CC M has only 1 CC • Name both NM’s as they appear on the PT BUT • The 2nd NM’s name ends in –ide an d • The subscripts in front of each Nm become GP’s in front of their names Name the PAI as it appears in the DB and name the Nm, but change the ending to -ide M has more than 1 CC M has only 1 CC Hydro___NM’s name)____ -ic acid Change the PAI name from –ate to -ic Will need a RN in name Change the ending from –ite to -ous Name the M and NM as they appear on the PT changing the NM ending to -ide Name the M and PAI as they appear on the PT/DB Will need a RN in name Ex.) HCl hydrochloric acid 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 _____________-ous acid _____________-ic acid 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 E.) (NH4)2O Ammonium Oxide Ex.) Mg(NO3)2 Magnesium Nitrite Ex.) HNO2 Nitrite is changed to nitrous Nitrous acid Ex.)CaO calcium oxide Ex.) H3PO4 Phosphate is changed to phosphoric phosphoric acid Ex.) N2O3 dinitrogen trioxide The M’s CC needs to be made into a RN and is placed after the M name 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 • Ex.) Fe3(PO4)2 • Fe +2 (PO4)-3 • -3 on the PAI is correct • iron(II) phosphate Name the M and NM as they appear on the PT changing the NM ending to -ide • Ex.) CuCl2 • Cu +2 Cl-1 • Cl-1 is correct • copper(II) chloride Legend: M = Metal PT = Periodic Table NM = Nonmetal GP = 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)