1. Warm-upWarm-up
• Are the following compound ionic?Are the following compound ionic?
• MgClMgCl22
• COCO22
• CaSCaS
• HH22OO
• What are the characteristics of ionic compounds?What are the characteristics of ionic compounds?
• Metal and nonmetal in formulaMetal and nonmetal in formula
• High melting point.High melting point.
• Conductive as liquid, or dissolved in water.Conductive as liquid, or dissolved in water.
• Form CrystalsForm Crystals
• Shatter when struck

2. 4-6: Naming Compounds4-6: Naming Compounds
• NameName ionic compounds.ionic compounds.
• WriteWrite formulas from ionic compound names.formulas from ionic compound names.

3. Naming Ionic CompoundsNaming Ionic Compounds
• Write the name of the metal.Write the name of the metal.
• Write the name of the nonmetal with the endingWrite the name of the nonmetal with the ending
changed to –ide.changed to –ide.
Example:Example:
Nitrogen = nitrideNitrogen = nitride Sulfur = sulfideSulfur = sulfide
Oxygen = oxideOxygen = oxide Chlorine = chlorideChlorine = chloride
Phosphorus = phosphidePhosphorus = phosphide Iodine = iodideIodine = iodide
Fluorine = fluorideFluorine = fluoride Bromine = bromideBromine = bromide

4. Try these examples on your own.Try these examples on your own.
• BeFBeF
• beryllium fluorideberyllium fluoride
• LiLi22OO
• lithium oxidelithium oxide
• BB22SS33
• boron sulfideboron sulfide
• MgMg33NN22
• magnesium nitridemagnesium nitride
• CaClCaCl22

5. Transition metalsTransition metals
• Transition metals can have different numbers ofTransition metals can have different numbers of
valence electrons.valence electrons.
• Transition metals can have multiple ion charges.Transition metals can have multiple ion charges.
• A roman numeral indicates the charge of the ionA roman numeral indicates the charge of the ion
• FeFe+2+2
FeFe+3+3
• Iron (II)Iron (II) Iron (III)Iron (III)
• CuCu+1+1
CuCu+2+2
• Copper (I)Copper (I) Copper (II)Copper (II)
• Nonmetal do not have multiple chargesNonmetal do not have multiple charges
• No roman numerals!!!!!No roman numerals!!!!!

6. Naming Ionic CompoundsNaming Ionic Compounds
• Name metal (positive charge)Name metal (positive charge)
• Use roman numeral only if it is a transition metal withUse roman numeral only if it is a transition metal with
multiple charges.multiple charges.
• Name nonmetal (negative charge)Name nonmetal (negative charge)
• No roman numerals!!!!!!!!No roman numerals!!!!!!!!

7. Naming ExamplesNaming Examples
• CuClCuCl
• Copper (I) chlorideCopper (I) chloride
• MnMn22SS33
• Manganese (III) sulfideManganese (III) sulfide
• SnOSnO22
• Tin (IV) oxideTin (IV) oxide
• ZnClZnCl22
• Zinc chlorideZinc chloride

8. Formula ExamplesFormula Examples
• Chromium (III) sulfideChromium (III) sulfide
• CrCr22SS33
• Gallium (III) nitrideGallium (III) nitride
• GaNGaN
• Lead (II) fluorideLead (II) fluoride
• PbFPbF22
• Copper (II) nitrideCopper (II) nitride
• CuCu33NN22
• Iron (III) sulfideIron (III) sulfide
• FeFe22SS33

9. Polyatomic IonsPolyatomic Ions
• Ions that are made of more than one atom.Ions that are made of more than one atom.
Ammonium – NHAmmonium – NH44
++
Nitrite – NONitrite – NO22
--
Nitrate – NONitrate – NO33
--
Hydroxide – OHHydroxide – OH--
Cyanide – CNCyanide – CN--
Permanganate – MnOPermanganate – MnO44
--
Hypochlorite – ClOHypochlorite – ClO--
Chlorite – ClOChlorite – ClO22
--
Chlorate – ClOChlorate – ClO33
--
Perchlorate – ClOPerchlorate – ClO --
Acetate – CAcetate – C22HH33OO22
--
Carbonate – COCarbonate – CO33
-2-2
Sulfite – SOSulfite – SO33
-2-2
Sulfate – SOSulfate – SO44
-2-2
Perioxide – OPerioxide – O22
-2-2
Phosphate – POPhosphate – PO44
-3-3
Arsenate – AsOArsenate – AsO44
-3-3

10. Writing polyatomic formulasWriting polyatomic formulas
• Sodium carbonateSodium carbonate
• NaNa22COCO33
• Calcium nitrateCalcium nitrate
• Ca(NOCa(NO33))22
• Ammonium phosphateAmmonium phosphate
• (NH(NH44))33POPO44
• Potassium permanganatePotassium permanganate
• KMnOKMnO44
• Aluminum chloriteAluminum chlorite
• Al(ClOAl(ClO22))33

11. Naming Polyatomic examplesNaming Polyatomic examples
• NHNH44ClCl
• Ammonium chlorideAmmonium chloride
• NaNONaNO33
• Sodium nitrateSodium nitrate
• KCNKCN
• Potassium cyanidePotassium cyanide
• LiLi33POPO44
• Lithium phosphateLithium phosphate
• (NH(NH44))22COCO33
• Ammonium carbonateAmmonium carbonate