NAMING IONIC COMPOUNDS: These start with a metal cation or a positive
polyatomic ion. The cation has a positive charge because it lost an electron. The anion
always comes after the cation in the compound; it has a negative charge because it gained
an electron. When naming ionic compounds, remember the total charge for the cation and
anion must equal to zero (0). If a metal is in “Rome,” the charge is represented by a
Roman numeral. Polyatomic ions have more than one element in an ion and have a pos. or
neg. charge.
NAMING MOLECULAR COMPOUNDS: These start with a non-metal. Molecular
compounds are made of atoms bonded together by sharing electrons. They are different
from ionic compounds in that there are no ions and no charge involved. When naming a
molecular compound, find the name of each element in the compound and use the prefixes
for the total number of each element in the compound.
Formula
1. CaO
2. Al2S3
3. Fe(OH)2
4. NiO
5. NaOH
6. NiPO4
7. CuO
8. AlPO4
9. Fe(NO3)2
10. Na2SO4
11. Co(NO3)3
12. SrCl2
13. NaF4
14. SiCl6
15. Br3O7
16. NF4
17. P3Br8
18. Ag2O
19. C2O3
20. NH4Cl
1st element (M
Ionic or
More than
or NM)
Covalent
2 elements
Name
WRITING CHEMICAL FORMULAS:
When given the name of a compound and asked to write its formula, there are 2
things to keep in mind. First, the number of the prefix is written as a subscript after the
element. Second, the total charge of an ionic compound must equal zero (0).
Name
1st
Ionic or
More
element
Covalent
than 2
(M or
NM)
1. lithium nitride
2. copper(II) hydroxide
3. calcium chloride
4. di-carbon tri-oxide
5. penta-sulfur tetra- oxide
6. potassium phosphate
7. lead (II) chloride
8. calcium nitrate
9. magnesium oxide
10. aluminum sulfide
11. sodium carbonate
12. ammonium chloride
elements
Formula
Basic Types of Chemical Reactions (There are more)
Balance, write word or chemical equations, and identify the type of chemical reaction.
Reaction Type
________1)
___________2)
Name:
___________3)
Name :
Sodium Bromide + Calcium hydroxide
____ NH3
+
Ammonia
____ C10H8
+
Naphthalene
___________4)
Pb
+
__________5)
Li3N
+
__________6)
____ H2SO4

Calcium Bromide + Sodium hydroxide

____ (NH4)2SO4
+
____ O2

____ CO2
+ ____ H2O
+
H3PO4
NH4NO3
Lithium bromide

H2
+
Pb3(PO4)2

LiNO3
+
(NH4)3N

Lithium
+
Bromine
Sodium is an ____________metal. Calcium is an ___________ _________________metal.
They both can __________ electrons to become _____________ ions (_____________).
Chlorine is a _____________________ & can ___________electrons & become
a_____________ ion (_____________). Neon is a _________ ________. Iron is
a___________________ metal. A metalloid or ______-___________ is Silicon. A group or
___________ goes ___ & ______ vertically, while a _________ is horizontal on the periodic
table. ______ is found in the 2nd period and 2nd group. Iodine is in the ____ period and the
_______ group.
Circle the reactants and box the products:
Li3N
+
3 NH4NO3

3 LiNO3
+
(NH4)3N
The 3 in front of LiNO3 is called a ______________ and distributes to the entire formula. The 3
in (NH4)3N is called a ______script and applies to the entire ____________________ion.
Lithium nitride is written with 3 Li and one N because of the ion charges that cancel out to
make it a neutral compound. The Lithium ion has a +1 charge and is written as Li+1 and the
nitride ion has a ______ charge and is written as N-3. The +1 and -3 are called ______scripts.
The law of conservation states that matter cannot be ____________ or _________________ only
_____________________ in __________________ or _______________.
It is why we ____________________________________.
Polyatomic Ion Name
Formula &
charge
Phosphate
Sulfate
Carbonate
Nitrate
Hydroxide
Ammonium
Greek prefix
1
2
3
4
5