Naming Polyatomic Compounds

OUTCOME QUESTION(S): C11-3-06 NAMING AND EQUATIONS Write the formulas and/or names for any general ionic, covalent, or polyatomic compound. Write and classify balanced chemical equations from written descriptions of reactions. Classify the type of reaction and predict the products to create a complete balanced equation. Vocabulary & Concepts 

OCl2 oxygen dichloride MgCl2 magnesium chloride CuCl2 Does it have a metal? YES (ionic) Is it a transition? NO (covalent) NO charges NO criss-cross Use prefixs Ends in “ide” NO YES Find charges Criss-cross Ends in “ide” Find charges Reverse Criss-cross Use Brackets Ends in “ide” OCl2 oxygen dichloride MgCl2 magnesium chloride CuCl2 copper (II) chloride

Al(C2H3O2)3 Polyatomic Ions (poly = many) Groups of covalently bonded atoms that act as ions. Polyatomic ions function as one unit with one ionic charge – gain or lose electrons. Al(C2H3O2)3 Aluminum Acetate Note the ending (not “ide”) – the ending is the clue that it is polyatomic and NOT a plain element

There are a few “ides” BUT they are obviously not elements

Mg NO3 Mg(NO3) magnesium nitrate Write the name of the ionic compound: + 2 - 1 Mg NO3 Mg(NO3) 2 2 magnesium nitrate We get the valences (charges) and criss-cross – just like building any ionic compound

OCl2 oxygen dichloride MgCl2 CuCl2 magnesium chloride Does it have a metal? YES (ionic) Is it a transition? Polyatomic NO (covalent) Find charges Reverse Criss-cross Don’t change ending NO charges NO criss-cross Use prefixs Ends in “ide” Fe(NO3)2 iron (II) nitrate NO Find charges Criss-cross Ends in “ide” YES Find charges Reverse Criss-cross Use Brackets Ends in “ide” OCl2 oxygen dichloride MgCl2 magnesium chloride CuCl2 copper (II) chloride If you are having trouble naming, take a screen shot of this and save it somewhere to reference…

Ni(NO3)2 magnesium sulfate KMnO4 iron (III) hydroxide Ca(C2H3O2)2 silver chromate PbCO3 tin (IV) sulfate Na2HPO4 ammonium nitrite nickel (II) nitrate MgSO4 potassium permanganate Fe(OH)3 calcium acetate Ag2CrO4 lead (II) carbonate Sn(SO4)2 sodium hydrogen phosphate NH4NO2

C11-3-06 NAMING AND EQUATIONS CAN YOU / HAVE YOU? C11-3-06 NAMING AND EQUATIONS Write the formulas and/or names for any general ionic, covalent, or polyatomic compound. Write and classify balanced chemical equations from written descriptions of reactions. Classify the type of reaction and predict the products to create a complete balanced equation. Vocabulary & Concepts