Summary for Naming Compounds
1. Group 1, 2, 3 metal with Group 15, 16,
17 nonmetals
2. Group 1, 2, 3, metal with polyatomic ions
3. Transition/other metal with Group 15, 16,
17 nonmetal
4. Transition/other metal with polyatomic
ions
5. Naming covalent compounds
6. Naming acids
1.
2.
Group 1, 2, 3 metal with nonmetals: Chemical
formula to chemical name
State name of metal
State name of nonmetal with –ide ending
Chemical
Formula
Name of
Metal ion
Name of
Nonmetal ion
(-ide ending)
CsF
AlCl3
MgI2
Rb2O
SrI2
K2S
Chemical
Name
1.
2.
3.
Group 1,2,3 Metals with Nonmetal:
Chemical Name to Chemical Formula
Write the symbol for the metal and nonmetal.
Determine the charges for each based on the group that
the element is found.
Switch the charges crossway to get the subscripts.
Chemical
Name
Aluminum sulfide
Beryllium bromide
Calcium chloride
Potassium oxide
Magnesium iodide
Cesium fluoride
Symbol for
Metal ion
Symbol for
Nonmetal ion
(charge based on
element’s group)
(charge based on
element’s group)
Chemical
Formula
Group 1, 2, 3 metal with polyatomic ions:
Chemical formula to chemical name
1.
2.
3.
State name of metal ion
State name of the polyatomic ion
Combine to get the full chemical name
Chemical
Formula
Na2SO4
KH2PO4
Ca(OH)2
KClO3
Na2SO3
CsClO4
Name of
Metal ion
Name of
Chemical
Polyatomic ion Name
Group 1,2,3 Metals with Polyatomic ions:
Chemical Name to Chemical Formula


Write the symbol for the metal and polyatomic ion with their charges.
Switch the charges crossway to get the subscripts (use parentheses
to express more than one polyatomic unit).
Chemical Name
Aluminum dichromate
Beryllium acetate
Calcium perchlorate
Potassium dihydrogen
phosphate
Magnesium phosphate
Cesium Carbonate
Symbol for
Metal ion
Symbol for
Chemical
Polyatomic ion Formula
(charge based on
element’s group)
(Use parentheses for
2 or more units)
Laboratory: Identifying Chemical
formulas
Investigatible Question:
How does the mixing ratios differ for Silver
(I)compound containing group 17 nonmetals vs
Silver (I) substances containing group 16
nonmetals?
Hypothesis:
Investigation Design:
Transition/other metal ions with Nonmetal ions:
Chemical Name → Chemical Formula
1.
2.
3.
State name of metal with roman numeral to tell the charge (the formula
provided).
State name of nonmetal ion.
Combine the two parts to get the full name of the compound.
Transition/Other metals with Nonmetal ions:
Chemical formula to Chemical Name
Chemical
Formula
PbBr2
PbBr4
FeS
Fe2S3
CoCl3
CrCl3
Subscript
for
transition/
other
metal ( A )
Subscript
for
Nonmetal
ion unit
( B)
Roman Numeral
=
Charge of
Nonmetal
A
x
Name of
Metal ion
(with roman
B numeral)
Name of
Nonmetal
ion
Chemical
Name
1.
2.
3.
Transition/other metals with Nonmetals:
Chemical name to Chemical formula
Write the symbol for the metal and nonmetal.
Determine the charges for each based on the group that
the element is found.
Switch the charges to get the subscripts.
Chemical
Name
Iron (II) sulfide
Tin (IV) bromide
Gold (V) chloride
Manganese (III)
oxide
Silver (I) iodide
Lead (VII) fluoride
Symbol for
Metal ion
Symbol for
Nonmetal ion
(use roman numeral
to get the charge)
(charge based on
group number)
Chemical
Formula
Transition/other metal ions with Polyatomic ions:
Chemical Name → Chemical Formula
1.
2.
3.
State name of metal with roman numeral to tell the charge (the formula
provided).
State name of polyatomic ion.
Combine the two parts to get the full name of the compound.
Chemical
Formula
HgNO3
Hg(NO3)2
Pb2Cr2O7
Mn(OH)7
Cu3PO4
Ni3(PO4)4
Transition/Other metals with Polyatomic ions:
Chemical formula to Chemical Name
Subscript Subscript
Name of
Chemical
Roman Numeral Name of
for
for
Metal ion
Polyatomic Name
=
transition/ Polyatomic Charge of x B (with roman
ion
Polyatomic
numeral)
other
ion unit
A
metal ( A) ( B )
Transition/other metal ions with Polyatomic ions:
Chemical Name → Chemical Formula
1.
2.
Write the symbol and charge for both the transition (or other) metal ion and
the polyatomic ion.
Combine ions and switch the charges to get the subscripts (use parentheses
in cases where 2 or more polyatomic ions are being expressed).
Chemical
Name
Symbol of
Metal ion
(use roman numeral
to get the charge)
Iron (II) nitrite
Tin (IV) nitrate
Gold (V) chlorate
Manganese (III)
chlorite
Silver (I) acetate
Lead (VII) hydrogen
sulfate
Symbol of
Chemical
Polyatomic ion Formula
Covalent Compounds: Chemical formula → Chemical name
1. Write down the names for each part of the chemical formula with
appropriate prefix.
2. Combine parts to get the full name of the compound represented.
Chemical
Formula
PCl5
N2O3
SO2
SO3
P4O6
SF6
First element with Second element
prefix
with prefix
(Don’t use mono-) (-ide ending)
Chemical
Name
Covalent Compounds: Chemical Name → Chemical Formula
1. Write the chemical symbol preceded by the number of atoms
for each element represented in the chemical name.
2. Combine the symbols and write the appropriate subscripts.
Chemical Name Symbol and
quantity for
first element
Carbon monoxide
Phosphorus
pentachloride
Sulfur hexafluoride
Dinitrogen
pentoxide
Iodine trichloride
Nitrogen monoxide
Symbol and
quantity for
second element
Chemical
Formula
Naming acids
Hydrogen
with
Group 17 nonmetals
-ide
-ic
HCl
Hydrogen Chloride ic
Hydrochloric acid
Hydrogen
with
Polyatomic ions
-ide
-ic
-ate
-ic
HCN
Hydrogen Cyanide ic
Hydrocyanic acid
-ite
-ous
HClO2
Hydrogen chlorite ous
Chlorous acid
HC2H5O2
Hydrogen acetate ic
Acetic acid
Acids: Chemical formula → Chemical name
1.
2.
3.
Write down the names for the positive and negative parts of the compound.
Combine parts to determine chemical name.
Edit name based on rules for naming acids.
Chemical
Formula
HCl
HF
HC2H3O2
H2SO4
HNO2
HClO4
Name of First
Part
Name of
Second Part
(-ide ending for
15,16,17, or give
name of
polyatomics)
Chemical
Name
Acid Chemical
name
Acids: Chemical Name → Chemical Formula
1. Edit the name base upon the rules for naming acids.
2. Write the chemical symbols for the positive and negative ions.
3. Switch charges to get subscripts and reduce to lowest terms.
Chemical Name
Hydrobromic acid
Hydroiodic acid
Nitrous acid
Sulfurous acid
Chloric acid
Phosphoric acid
Symbol of Positive
ion
Symbol of Negative
(charge based on
group number)
(charge based on the group
or on the polyatomic ion)
ion
Chemical Formula