Chemistry I Practice Test (Chapter 9)
1. Give the formula of the root polyatomic ions: (16 points)
Acetate
Phosphate
Iodate
Chlorate
Sulfate
Manganate
Hydroxide
Ammonium
C2H3O2PO43IO3ClO3SO42MnO3OHNH4+
Chromate
Peroxide
Hydronium
Carbonate
Cyanate
Cyanide
Fluorate
Nitrate
CrO42O22H3O+
CO32OCNCNFO3NO3-
2. Fill in the blank for the naming rules (9 points):
a. When you add 1 oxygen atom to the root polyatomic name, you add the prefix per- and
the suffix –ate to the root form
b. When you subtract 1 oxygen atom to the root polyatomic name, you add the prefix (no
prefix added, trick question) and the suffix -ite to the root form
c. When you subtract 2 oxygen atoms to the root polyatomic name, you add the prefix
hypo- and the suffix-ite to the root form
3. Fill in the blank for the acid naming rules (7 points):
a. When you have an –ate polyatomic ion, the name of the compound has the ending
-ic and the word -acid added to the end
b. When you have an –ite polyatomic ion, then the name of the compound has the ending
-ous and the word -acid added to the end
c. When you have a binary compound (H+ + X-), you add the prefix hydro and the suffix –ic
and the word –acid to the end.
4. Fill in the blank with the correct prefixes for molecular compounds (5 points):
1 mono
6 Hexa
7 Hepta
10 Deca
15 pentadeca
5. Give the charge for the following transition metal ions (5 points):
Fe (III) =
3+
Ru (V)=
5+
Co (II)=
2+
Ni (IV)=
4+
Rh (VI)=
6+
6. Give the name of the following binary ions (5 points):
NaCl
Sodium Chloride
MgF2
Magnesium Fluoride
AlBr3
Aluminum Bromide
BeS
Beryllium Sulfide
Li2O
Lithium Oxide
7. Name the following molecular compounds from their formula (3 points):
C2H4O
Dicarbon tetrahydrogen monoxide
Si2O2H
Disilicon dioxide monohydride
CHCl3
Monocarbo monohydrogen trichloride
8. Acid / Base naming: Give the formula from the name or the name from the formula (10 points):
H2SO3
Sulfurous Acid
HCl
Hydrochloric acid
NaOH
Sodium hydroxide
Magnesium Hydroxide
Mg(OH)2
Phosphoric acid
H3PO4
Hydrofluoric acid
HF
HNO2
Nitrous Acid
HOCN
Cyanic Acid
HNO3
Nitric Acid
Bromous acid
HBrO2
9. Use the law of multiple and definite proportions to determine if the two compounds are the
same (10 points):
Known
Unknown
Is it the same compound?
18.0 g H / 144.0 g O
1.0 g H / 8.0 g O
(18 / 144) = (1 / 8) yes
12.0 g C / 4.0 g H
12.0 g C / 2.0 g H
(12 / 4) ≠ (12 / 2) no
24.0 g C / 4.0 g H / 16.0 g O
36.0 g C / 6.0 g H / 24.0 g O
(24 / 4 / 16) = (36 / 6 / 24) yes
8.0 g H / 64.0 g O
8.0 g H / 32.0 g O
(8 / 64) ≠ (8 / 32) no
6.0 g H / 96.0 g O
1.5 g H / 24.0 g O
(6 / 96) = (1.5 / 24) yes
10. Name the following polyatomic ions from the formula or give the formula from the name (20
points):
Magnesium Sulfate
MgSO4
Cobalt (III) Phosphite
CoPO3
Rh (IV) Cyanide
Rh(CN)4
Strontium hypochlorite
Sr(ClO)2
Aluminum bromate
Al(BrO3)3
Gallium manganite
Ga(MnO2)3
Molybdenum (I) hyponitrite
MoNO
Copper (III) Hydroxide
Cu(OH)3
Hydronium Cyanide
H3OCN
Ammonium Chloride
NH4Cl
KOH
Potassium Hydroxide
Na2SO5
Sodium persulfate
FeSO4
Iron (II) sulfate
Mg(ClO4)2
Magnesium perchlorate
Pd(OCN)5
Palladium (V) cyanate
Ca(CN)2
Calcium cyanide
K3(PO2)
Potassium hypophosphite
RhClO2
Rhodium (I) chlorate
Li2SO4
Lithium Sulfate
Cu(NO3)3
Copper (III) Nitrate
11. Write out the name of the compound or give the formula from the information given (10 points):
Chlorous Acid
HClO2
Vanadium (II) fluoride
VF2
LiCl
Lithium Chloride
Na2O
Sodium Oxide
Fe3(PO4)2
Iron (II) Phosphate
Potassium permanganate
KMnO4
Cyanic acid
HOCN
Calcium Hydroxide
Ca(OH)2
C3H8
Tricarbon octahydride
Periodic acid
HIO3