a) nomenclature (naming) compounds 1. covalent 2. ionic b) writing proper formulas
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A) Nomenclature (naming) compounds1. Covalent2. Ionic
B) Writing proper formulas
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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
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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”
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COVALENT COMPOUNDSA) H2O ____________________B) CO2 ____________________C) CCl4 ____________________D) P2S4 ____________________
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2nd Element names (non-metals)N = NITRogenP =
PHOSPHorusS = SULFurCl = CHLORineBr = BROMine
NITRidePHOSPHideSULFideCHLORideBROMide
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WRITING FORMULAS from namesDetermine each element & number
Tetrasulfur pentaoxide
Octanitrogen difluoride
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COVALENT COMPOUNDS
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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)
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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
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Binary Ionic (one charge)Name the metalName the non-metal prefix + “ide”
CaCl2= Calcium chloride
Li2O = Lithium oxide
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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
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Determine the name from the formula1. Na2O 5. AlP
2. Al2S3 6. Be3N2
3. Ba3P2 7. CsBr
4. KI 8. Mg3N2
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FORMULAIonic or Covalent Name
1.CO2 I or C _________________2.Na2S I or C _________________3.Al2S3 I or C _________________4.S2O5 I or C _________________
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“Up to this Point”Covalent: _________________ +
__________________Ionic: _________________ +
__________________Binary:
Ternary:
Metal with only one charge:
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NEXT: Metals with more than one chargeLIST THE TWO POSSIBLE CHARGES AND
THEIR APPROPRIATE NAME WITH ROMAN NUMERAL
Symbol NameIron:
Cobalt
Copper:
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Naming: Binary Ionic more than one chargeYou must determine the charge of the metal.(“REVERSE” Crisscross)
Co2S3 _________________________
CoCl2 _________________________
FeO _________________________
FeP _________________________
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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 _______________________
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Naming Binary Ionic (more than one charge)a. SnBr2 _______________________
b. SnBr4 _______________________ c. CrO _______________________ d. Cr2O3 _______________________ e. Fe2O3 _______________________ f. HgI2 _______________________
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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 ________________
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Write the proper namea. PbCl2 _________________________________ b. Fe2O3 _________________________________ c. SnI2 _________________________________ d. Hg2O _________________________________
e. HgS _________________________________ f. CuI _________________________________
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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.
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List of Polyatomic Ions
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Determining charges
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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
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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
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Naming the Polyatomic Ion
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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 :____________________________
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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:________
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