Science 9 Review Worksheet 3.2
1. Write the names and formulas of the following compounds. Then draw a picture of
the molecule or group formed by the compound.
a. AlI3
Aluminum iodide
b. Na2O
Sodium oxide
c. Mg3P2
Magnesium phosphide
d. AgI
silver iodide
e. CaSe
calcium selenide
f. K2S
potassium sulfide
g. RbF
rubidium fluoride
h. Ag3N
silver nitride
i. KBr
potassium bromide
j. Sr3P2
strontium phosphide
k. CdS
cadmium sulphide or calcium sulfide
l. Ag2O
silver oxide
m. Cs2S
cesium sulfide
n. CaI2
calcium iodide
o. NaF
sodium fluoride
Science 9 Review Worksheet 3.2
2. Write the formula of the compounds containing the following ions. Then draw a
picture of the molecule or group formed by the compound.
a. Li+1 with ClLiCl
b. Ca2+ with F1CaF2
c. Na1+ with S2Na2S
d. Ca2+ with S2CaS
e. Al3+ with O2Al2O3
f. Al3+ with N3AlN
3. Write the formulas of the following compounds. Then draw a picture of the molecule
or group formed by the compound.
a. lithium fluoride
LiF
b. silver sulphide
Ag2S
c. magnesium chloride
MgCl2
d. zinc oxide
ZnO
e. lithium oxide
Li2O
f. aluminum iodide
AlI3
g. barium phosphide
Ba3P2
Science 9 Review Worksheet 3.2
h. aluminum phosphide
AlP
i. rubidium selenide
Rb2Se
j. strontium nitride
Sr3N2
k. cesium sulphide
Cs2S
l. sodium nitride
Na3N
m. zinc phosphide
Zn3P2
n. calcium oxide
CaO
4. Write the formulas of the following compounds. Then draw a picture of the molecule
or group formed by the compound.
a. chromium (II) chloride
CrCl2
b. chromium (III) chloride
CrCl3
c. copper (I) sulphide
Cu2S
d. copper (I) iodide
CuI
e. iron (II) phosphide
Fe3 P2
f. Iron (III) phosphide
FeP
g. manganese (II) oxide
MnO
h. manganese (IV) oxide
MnO2
Science 9 Review Worksheet 3.2
i. mercury (II) bromide
HgBr2
j. tin (II) nitride
Sn3N2
k. tin (II) nitride
Sn3N2
l. tin(IV) nitride
Sn3N4
m. copper (I) nitride
Cu3N
o. lead (IV) chloride
PbCl4
5. Write the names of the following compounds. Cross back and check the valence of the
nonmetal (second element) to see if it is correct. Adjust both valences if the nonmetal
valence is incorrect. Then draw a picture of the molecule or group formed by the
compound.
a. CrBr2
Chromium (II) bromide
b. CrBr3
Chromium (III) bromide
c. FeI2
Iron (II) iodide
d. FeI3
iron (III) iodide
e. PbF2
Lead (II) fluoride
f. PbF4
Lead (IV) fluoride
g. MnO
manganese (II) oxide
Science 9 Review Worksheet 3.2
h. PbS
Lead (II) sulfide
i. Fe2O3
Iron (III) oxide
j. Hg3P2
Mercury (II) phosphide
k. Hg3N2
mercury (II) nitride
l. HgI2
Mercury (II) iodide
m. MnS
Manganese (II) sulfide
n. MnS2
Manganese (IV) sulfide
o. Sn3P4
Tin (IV) phosphide
6. Refer to the polyion table 3.10 on page 92 to name the following compounds. Then
draw a picture of the molecule or group formed by the compound.
a. NaCH3COO
Picture should have 1 circle for Na, 2 circles for C, 3 circles for H and two circles for O.
b. Ca(CH3COO)2
Picture should have 1 circle for Ca, 4 circles for C, 6 circles for H and 4 circles for O.
c. Cr(CH3COO)3
Picture should have 1 circle for Cr, 6 circles for C, 9 circles for H and 6 circles for O.
d. Al(OH)3
Picture should have 1 circle for Al, 3 circles for O, and 3 circles for H.
Science 9 Review Worksheet 3.2
e. Cr(OH)3
Picture should have 1 circle for Cr, 3 circles for O and 3 circles for H
f. (NH4)3P
Picture should have 3 circles for N, 12 circles for H and 1 circle for P.
g. (NH4)3PO4
Picture should have 3 circles for N, 12 circles for H, 1 circle for P and 4 circles for O.
h. CaSO4
Picture should have 1 circle for Ca, 1 circle for S and 4 circles for O.
i. Mg3(PO4)2
Picture should have 3 circles for Mg, 2 circles for P and 8 circles for O.
j. Ba3(PO3)2
Picture should have 3 circles for Ba, 2 circles for P and six circles for O.
7. Write the formulas of the following compounds
a. sodium chromate
NaCrO4
b. potassium permanganate
KMnO4
c. lithium dichromate
LiCr2O7
Science 9 Review Worksheet 3.2
d. sodium hydroxide
NaOH
e. magnesium hydroxide
Mg(OH)2
f. ammonium nitrate
NH4NO3
g. tin (II) hydroxide
Sn(OH)2
h. lead (II) hydroxide
Pb(OH)2
i. aluminum nitrate
Al(NO3)3
k. manganese (IV) sulphate
Mn(SO4)2
8. How many parts are there in the name of an ionic compound?
There are two parts, the positive metal ion (or positive polyion) and the negative
nonmetal ion (or negative polyion)
9. Name each of the ions in the list below and indicate which of the following words
describe it: positive ion, negative ion, multivalent metal, polyatomic ion. (more
than one word can be used for each one).