Section 10.2
Classifying Chemical Reactions
Practice Test
1.
Will the double displacement reaction NaOH + CaBr
2
occur? If so, what is the product of the reaction?
a.
No
b.
Yes, Br(OH)
2
c.
Yes, CaNa
d.
Yes, Ca(OH)
2
Hint
2.
Which of the following single-replacement reactions will occur?
a.
Br
2
(g) + HF(aq) →
b.
Cl
2
(g) + HBr(aq) →
c.
Au(s) + Cu(NO
3
)
2
(aq) →
d.
Cu(s) + ZnCl
2
(aq) →
Hint
3.
What type of reaction occurs when potassium and chlorine gas produce potassium chloride?
Predicting Products of Chemical Reactions
Class of reaction
Reactants
Probable products
Synthesis
Two or more substances
One compound
Combustion
A metal and oxygen
A nonmetal and oxygen
A compound and oxygen
The oxide of the metal
The oxide of the nonmetal
Two or more oxides
Decomposition
One compound
Two or more elements and/or compounds
Single-replacement
A metal and a compound
A nonmetal and acompound
new compound and the replaced metal
A new compound and the replaced nonmetal
Double-replacement
Two compounds
Two different compounds,
one of which is often a solid, water, or a gas
a.
combustion
b.
decomposition
c.
replacement
d.
synthesis
Hint
4.
What are the products of the reaction between barium hydroxide and hydrochloric acid?
a.
barium chloride and water
b.
barium hydroxide and water
c.
barium chloride and barium hydride
d.
chloric acid and barium
Hint
5.
The following chemical equation is classified as a ______________.
CaCO
3
→ CaO + CO
2
a.
synthesis reaction
b.
decomposition reaction
c.
single-replacement reaction
d.
double-replacement reaction
Hint
6.
In the combustion reaction of propane, C
3
H
8
, what are the products?
a.
C
3
H
8
and O
2
b.
C
3
H
8
and CO
2
c.
O
2
and H
2
O
d.
H
2
O and CO
2
Hint
7.
The major physical indicator of a combustion reaction is _______.
a.
heat
b.
a color change in solution
c.
the formation of a precipitate
d.
cold
Hint
8.
The chemical equation 2H
2
+ O
2
→ 2H
2
O represents a __________.
a.
synthesis reaction
b.
decomposition reaction
c.
single-replacement reaction
d.
double-replacement reaction
Hint
9.
The chemical equation Zn + 2HCl → H
2
+ ZnCl
2
represents a _________.
a.
synthesis reaction
b.
decomposition reaction
c.
single-replacement reaction
d.
double-replacement reaction
Hint
