A Nomenclature naming compounds 1 Covalent 2 Ionic

A) Nomenclature (naming) compounds 1. Covalent 2. Ionic B) Writing proper formulas

Covalent or Ionic: ______ + _______ Covalent: _____ + ______ Na. Cl P 2 Cl 4 Fe. Cl 3 Ca. O I or C SO 2 Ag. Cl Mn. O NS 2 I or C

Naming molecular compounds Covalent Bonds Non-metal + non-metal Prefixes 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 name Second element = # prefix + element prefix + “ide”

COVALENT COMPOUNDS A) B) C) D) H 2 O CO 2 CCl 4 P 2 S 4 ____________________

2 nd Element names (non-metals) N = NITRogen P = PHOSPHorus S = SULFur Cl = CHLORine Br = BROMine NITRide PHOSPHide SULFide CHLORide BROMide

WRITING FORMULAS from names Determine 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. Na. SO 4 Ca 3(PO 4)2 (NH 3)2 SO 4 Mn. SO 4 Some metals have more than one charge Fe (+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. CO 2 2. Ca. Cl 2 3. S 2 O 5 4. Na 2 SO 4 5. Co. Cl 3 6. Fe 2 O 3 7. N 2 Cl 4 8. Mn 3(PO 4)4 I or C if Ionic: Binary or Ternary I or C if Ionic: Binary or Ternary

Binary Ionic (one charge) Name the metal Name the non-metal prefix + “ide” Ca. Cl 2= Calcium chloride Li 2 O = Lithium oxide

Writing formulas of Binary Ionic Determine the metal and its charges Determine the non-metal and its charges Criss-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 formula 1. Na 2 O 5. Al. P 2. Al 2 S 3 6. Be 3 N 2 3. Ba 3 P 2 7. Cs. Br 4. KI 8. Mg 3 N 2

REVIEW: Identifying IONIC & COVALENT FORMULA Ionic or Covalent Name 1. CO 2 I or C _________ 2. Na 2 S I or C _________ 3. Al 2 S 3 I or C _________ 4. S 2 O 5 I or C _________

“Up to this Point” Covalent: _________ + _________ Ionic: _________ + _________ Binary: Ternary: Metal with only one charge:

NEXT: Metals with more than one charge LIST THE TWO POSSIBLE CHARGES AND THEIR APPROPRIATE NAME WITH ROMAN NUMERAL Symbol Name Iron: Cobalt Copper:

Naming: Binary Ionic more than one charge You must determine the charge of the metal. (“REVERSE” Crisscross) Co 2 S 3 _____________ Co. Cl 2 _____________ Fe. O Fe. P _________________________

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. Sn. Br 2 ____________ b. Sn. Br 4 c. Cr. O d. Cr 2 O 3 e. Fe 2 O 3 f. Hg. I 2 _______________________ ____________

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 ________________ ________________

TERNARY COMPOUNDS: Consist of a metal and a POLYATOMIC ion. Poly = many atomic = atom ion = charge particle A group of atoms that act as one large atom. Contains a specific charge.

List of Polyatomic Ions

Determining charges

Identifying the polyatomic When determining the formula: ends in “ate” or “ite”, except HYDROXIDE and CYANIDE Or if it begins with AMMONIUM Circle the polyatomic ion: Calcium sulfate Aluminum phosphate Tin (II) tartrate Ammonium oxide Sometimes you can have two polyatomic ions Ammonium sulfate

Identifying the polyatomic ion from a formula The polyatomic ion is always in a TERNARY compound. It’s always after the METAL, unless the compound begins with NH 4 (ammonium) Draw a line between the (+) side and the (-) side Circle the polyatomic ion Li 2 Si. O 3 Al 2(SO 4)3 Li. Cl. O 3 NH 4 Br

Naming the Polyatomic Ion

Naming Ternary Identify the ternary compound. Determine whether or not the METAL requires a ROMAN NUMERAL (contains more than one charge===GREEN) Name the Ternary compounds Ca. SO 4 : ______________ Mn 3(PO 4)4 : _______________ NH 4 Cl : ______________

Determining formulas for Ternary compounds. Determine the charge of the CATION (+) ion either the METAL or NH 4 Determine the charge of the POLYATOMIC ion. CRISSCROSS if necessary Calcium sulfate: ____ Barium hydroxide: ____ Iron (III) carbonate: _______ Ammonium sulfide: ____