Chemical Reactions
Practice Test
1.
What is the correct word equation for the chemical equation 2Fe(s) + 3Cl
2
(g) → 2FeCl
3
(s)?
a.
Aqueous iron and chlorine gas react to produce solid iron chlorate.
b.
Solid iron and chlorine gas react to produce solid iron chloride.
c.
Aqueous iron and chlorine gas react to produce aqueous iron chlorate.
d.
Solid iron and chlorine gas react to produce solid iron chlorate.
2.
What are the products of the reaction between barium hydroxide and hydrochloric acid?
a.
chloric acid and barium
b.
barium chloride and barium hydride
c.
barium hydroxide and water
d.
barium chloride and water
3.
When there are exactly the same number and type of atoms on both sides of a chemical equation, the equation is ____________.
a.
synthetic
b.
balanced
c.
ionic
d.
decomposed
4.
The chemical equation Zn + 2HCl → H
2
+ ZnCl
2
represents a _________.
a.
single-replacement reaction
b.
decomposition reaction
c.
synthesis reaction
d.
double-replacement reaction
5.
What is the complete ionic equation for the following chemical equation?
Cl
2
(aq) + Na
2
SO
4
(aq) → BaSO
4
(s) + 2NaCl(aq)
a.
Ba
2+
(aq) + Cl
-
(aq) + Na+(aq) + SO
4
2-
(aq) → Na+(aq) + Cl
-
(aq) + BaSO
4
(s)
b.
Ba
2+
(aq) + SO
4
2-
(aq) → BaSO
4
(s)
c.
Ba
2+
(aq) + 2Cl
-
(aq) + 2Na
+
(aq) + SO
4
2-
(aq) → 2Na
+
(aq) + 2Cl
-
(aq) + BaSO
4
(s)
d.
BaCl
2
(aq) + 2Na
+
(aq) + SO4
2-
(aq) → 2Na
+
(aq) + 2Cl
-
(aq) + BaSO
4
(s)
6.
The major physical indicator of a combustion reaction is _______.
a.
heat
b.
the formation of a precipitate
c.
a color change in solution
d.
cold
7.
Which of the following components will always be produced during a chemical reaction between an acid and a base?
a.
a base
b.
water
c.
a gas
d.
an acid
8.
Which of these is a spectator ion in the reaction 2NaOH(aq) + CuC
l2
→ 2NaCl(aq) + Cu(OH)
2
(s)?
a.
Cu
b.
Na
c.
Cl and Na
d.
OH
9.
In the following unbalanced chemical reaction, which components are classified as the reactants?
C
7
H
16
+ O
2
→ CO
2
+ H
2
O
a.
CO
2
and H
2
O
b.
C
7
H
16
and H
2
O
c.
C
7
H
16
and O
2
d.
C
7
H
16
and CO
2
10.
Balance the following equation. What is the coefficient for hydrogen fluoride?
SiO
2
+ HF → SiF
4
+ H
2
O
a.
3
b.
4
c.
2
d.
1
11.
In the chemical equation below, which of the components is a precipitate?
HCl(aq) + AgNO
3
(aq) → AgCl(s) + HNO
3
(aq)
a.
AgCl(s)
b.
HNO
3
(aq)
c.
HCl(aq)
d.
AgNO
3
(aq)
12.
The chemical equation 2H
2
+ O
2
→ 2H
2
O represents a __________.
a.
double-replacement reaction
b.
synthesis reaction
c.
single-replacement reaction
d.
decomposition reaction
13.
The following chemical equation is classified as a ______________.
CaCO
3
→ CaO + CO
2
a.
double-replacement reaction
b.
synthesis reaction
c.
single-replacement reaction
d.
decomposition reaction
14.
Na+(aq) is a _________________ in the following complete ionic equation.
H
+
(aq) + Cl
-
(aq) + Na
+
(aq) + OH
-
(aq) → Na
+
(aq) + Cl
-
(aq) + H
2
O(l)
a.
reacting compound
b.
participating ion
c.
reacting molecule
d.
spectator ion
15.
A balanced chemical equation is a direct presentation of the ___________.
a.
law of conservation of energy
b.
law of conservation of momentum
c.
law of conservation of mass
d.
ideal gas law
