Name
Chemistry
Ms. Elder
Nomenclature
Date
Block
Naming compounds
 Common names are Epsom salts, milk of magnesia, laughing gas, and many more
 There are over 4 million different compounds and more are discovered all the time
 Memorizing the common names would be impossible so we have a system
Binary compounds
 Compounds composed of 2 elements
 Two types:
 Compounds that contain
 Compounds that contain
Naming Compounds That Contain a Metal and a Nonmetal
Binary Ionic Compound
 Contain a positive ion (
 Two types of binary ionic compounds
 Type I:

Na+, Cs+, Ca+2, etc
 Type II:

Cr+2 or Cr+3, Cu+ or Cu+2
) and a negative ion (
)
Type I Binary Ionic Compounds
 The cation is always named 1st
 The cation is named as the element name
 Na+ is
 The anion is named by taking the 1st part of the element name and adding –ide
 Cl- is
Type I Binary Ionic Compounds
 NaI
 CaO
 NaCl
 KI
 CaS
 CsBr
 MgO
 CsF
 AlCl3
 MgI2
 Rb2O
 SrI2
 K2S
Type II Binary Ionic Compounds
 Some metals can produce 2 or more ions
 When this happens, we use
 The Roman numerals only tell us
 You do not need to use Roman numeral for metals that form only 1 cation
Type II Binary Ionic Compounds
 What is FeCl2 made of?
 What would we name it?
 What is PbO2 made of and what is its name?
Type II Binary Ionic Compounds
 Write out the following and give their name
 CuCl
 HgO
 Fe2O3
 MnO2
 PbCl4
Review Type I and II
 CoBr2
 CaCl2
 Al2O3
 CrCl3
Naming Binary Compounds That Contain Only Nonmetals (Type III)
Rules for naming Type III
 The 1st element in the formula is named 1st and the
is used.
 The 2nd element is named as though it were
 Prefixes are used to indicate
 The prefix mono- is never used for the 1st element
 Prefixes for Type III

mono-
1

di-
2

tri-
3

tetra-
4

penta-
5

hexa-
6

hepta-
7

octa-
8
Type III
 BF3
 notice they are both nonmetals
 Name the 1st element
 Name the 2nd as an anion
 Add prefixes

Practice Problems
 NO
 N2O3
 CCl4
 NO2
 IF3
 I2O7
 CO2
 CF4
 NH3
PCl3
Naming Binary Compounds: A Review
Naming binary compounds
Type I, II, III
 AsF3
 Al2S3
 SnBr4
 CS2
 CdS
 AgCl
 KI
 NO
P2O5
FeCl3
Naming compounds with polyatomic ions
 Simply write the name of the polyatomic ion
 No change is needed
 What would NH4C2H3O2 be called?
 Look at the table

NH4

C2H3O2
 Put the them together in the same order as the formula
 If using a cation with more than one charge, use Roman numerals
 Fe(NO3)3

 Looking on our chart we see NO3 has a

If they’re totaled, that makes our total charge
 Fe must be

Polyatomic Practice
 Na2SO4
 KH2PO4
 Mn(OH)2
 Na2SO3
 Cu(NO3)2
to cancel it out
 PbCO3
 KHSO4
 NH4I
 NaCN
Naming Chemical Compounds
Name the following chemical compounds to be turned in for a grade
 Na2CO3
 FeBr3
 PCl3
 CsClO4
 CuSO4
 NaHCO3
 BaSO4
 CsClO4
 BrF5
 NaBr
 KOCl
 Zn3(PO4)2
 Ca(HCO3)2
 MgI2
 KMnO4
 Sb2O3
 Fe(OH)2
Naming Acids
Acids

 The rules for naming acids depend on whether it has
Rules for naming acids
 If no oxygen is present

Add prefix hydro- and suffix –ic to the root word and the word acid to the end

HCl
 If oxygen is present
 Named after the anion present

When anion ends in –ate


Add suffix –ic and the word acid
When anion ends in –ite

Naming Acids
Acid Practice
 HF
 H3PO3
 HNO3
Add suffix –ous and the word acid
 HBrO4
 H2S