A) Nomenclature (naming) compounds1. Covalent2. Ionic

B) Writing proper formulas

Covalent or IonicIonic: ___________ + _____________Covalent: __________ + ___________

NaCl I or C SO2 I or CP2Cl4 I or C AgCl I or CFeCl3 I or C MnO I or CCaO I or C NS2 I or C

Naming molecular compoundsCovalent Bonds Non-metal + non-metalPrefixes are used to determine the number of

each element (Except when the first element has only ONE (1)

Number Prefix 1 _______- 6 ______- 2 _______- 7 ______-3 _______- 8 ______- 4 _______- 9 ______-5 _______- 10 ______-First element = # prefix + element nameSecond element = # prefix + element prefix +

“ide”

COVALENT COMPOUNDSA) H2O ____________________B) CO2 ____________________C) CCl4 ____________________D) P2S4 ____________________

2nd Element names (non-metals)N = NITRogenP =

PHOSPHorusS = SULFurCl = CHLORineBr = BROMine

NITRidePHOSPHideSULFideCHLORideBROMide

WRITING FORMULAS from namesDetermine each element & number

Tetrasulfur pentaoxide

Octanitrogen difluoride

COVALENT COMPOUNDS

Naming BINARY (2 elements) IONIC (one charge ONLY)Some Ionic compounds have more than 2

elements.NaSO4 Ca3(PO4)2(NH3)2SO4 MnSO4

Some metals have more than one chargeFe (+2, +3) Sn (+2, +4)

Identification of compounds: List as either Covalent or Ionic. If Ionic, list as either Binary or Ternary (more than 2 elements)

1. CO2 I or C if Ionic: Binary or Ternary2. CaCl2 I or C if Ionic: Binary or Ternary3. S2O5 I or C if Ionic: Binary or Ternary4. Na2SO4 I or C if Ionic: Binary or Ternary5. CoCl3 I or C if Ionic: Binary or Ternary6. Fe2O3 I or C if Ionic: Binary or Ternary7. N2Cl4 I or C if Ionic: Binary or Ternary8. Mn3(PO4)4 I or C if Ionic: Binary or Ternary

Binary Ionic (one charge)Name the metalName the non-metal prefix + “ide”

CaCl2= Calcium chloride

Li2O = Lithium oxide

Writing formulas of Binary IonicDetermine the metal and its chargesDetermine the non-metal and its chargesCriss-cross if necessary

1. Lithium chloride 4. Potassium phosphide

2. Calcium oxide 5. Boron fluoride

3. Aluminum sulfide 6. Barium phosphide

Determine the name from the formula1. Na2O 5. AlP

2. Al2S3 6. Be3N2

3. Ba3P2 7. CsBr

4. KI 8. Mg3N2

FORMULAIonic or Covalent Name

1.CO2 I or C _________________2.Na2S I or C _________________3.Al2S3 I or C _________________4.S2O5 I or C _________________

“Up to this Point”Covalent: _________________ +

__________________Ionic: _________________ +

__________________Binary:

Ternary:

Metal with only one charge:

NEXT: Metals with more than one chargeLIST THE TWO POSSIBLE CHARGES AND

THEIR APPROPRIATE NAME WITH ROMAN NUMERAL

Symbol NameIron:

Cobalt

Copper:

Naming: Binary Ionic more than one chargeYou must determine the charge of the metal.(“REVERSE” Crisscross)

Co2S3 _________________________

CoCl2 _________________________

FeO _________________________

FeP _________________________

Formula for Binary Ionic more than one charge.

a. chromium (III) chloride _______________________ b. tin (IV) oxide _______________________ c. lead (II) oxide _______________________ d. copper (II) iodide _______________________ e. cobalt (II) oxide _______________________ f. cobalt (III) oxide _______________________

Naming Binary Ionic (more than one charge)a. SnBr2 _______________________

b. SnBr4 _______________________ c. CrO _______________________ d. Cr2O3 _______________________ e. Fe2O3 _______________________ f. HgI2 _______________________

Write the formula a. chromium (III) sulfide ________________ b. manganese (IV) oxide ________________ c. gold (III) chloride ________________ d. titanium (IV) chloride ________________ e. iron (II) bromide ________________ f. iron (II) oxide ________________

Write the proper namea. PbCl2 _________________________________ b. Fe2O3 _________________________________ c. SnI2 _________________________________ d. Hg2O _________________________________

e. HgS _________________________________ f. CuI _________________________________

TERNARY COMPOUNDS:Consist of a metal and a POLYATOMIC ion.Poly = many atomic = atom ion = charge

particleA group of atoms that act as one large atom.

Contains a specific charge.

List of Polyatomic Ions

Determining charges

Identifying the polyatomicWhen determining the formula: ends in “ate”

or “ite”, except HYDROXIDE and CYANIDEOr if it begins with AMMONIUMCircle the polyatomic ion:Calcium sulfate Aluminum phosphate

Tin (II) tartrate Ammonium oxide

Sometimes you can have two polyatomic ionsAmmonium sulfate

Identifying the polyatomic ionfrom a formulaThe polyatomic ion is always in a TERNARY

compound.It’s always after the METAL, unless the compound

begins with NH4 (ammonium)Draw a line between the (+) side and the (-) sideCircle the polyatomic ion

Li2SiO3 Al2(SO4)3

LiClO3 NH4Br

Naming the Polyatomic Ion

Naming TernaryIdentify the ternary compound.Determine whether or not the METAL

requires a ROMAN NUMERAL (contains more than one charge===GREEN)

Name the Ternary compounds

CaSO4 : ___________________________

Mn3(PO4)4 : ______________________________

NH4Cl :____________________________

Determining formulas for Ternary compounds.

Determine the charge of the CATION (+) ion either the METAL or NH4

Determine the charge of the POLYATOMIC ion.CRISSCROSS if necessary

Calcium sulfate:________ Barium hydroxide:________

Iron (III) carbonate:_______Ammonium sulfide:________