PRE LABORATORY QUIZ 7: CHEMICAL REACTIONS
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Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
A
B
C
D
E
1.
Which of the following is not a classification for the chemical reactions being investigated in this laboratory exercise?
a.
combination
d.
double replacement
b.
decomposition
e.
filtration
c.
combustion
A
B
C
D
E
2.
Which of the following hardware / glassware is not being used in this laboratory exercise?
a.
test tubes
d.
splints/matches
b.
graduated cylinders
e.
well plates
c.
burets
A
B
C
D
E
3.
According to REACTION 1 in the laboratory procedure, to what chemical does water get added?
a.
potassium chloride
d.
iron (II) nitrate
b.
copper (II) nitrate
e.
iron (II) sulfate
c.
copper (II) sulfate
A
B
C
D
E
4.
According to REACTION 3 in the laboratory procedure, what chemical is heated with a bunsen burner?
a.
sodium chloride
d.
copper (II) hydroxide
b.
sodium hydroxide
e.
iron (II) hydroxide
c.
iron (II) chloride
A
B
5.
According to REACTION 4 in the laboratory procedure, is a gas being released?
a.
yes
b.
no
A
B
C
6.
According to the following chemical equation:
2 C
6
H
6
+ 15 O
2
® 12
CO
2
+ 6 H
2
O
What are the reactants?
a.
2 C
6
H
6
+ 15 O
2
c.
2 C
6
H
6
+ 15 O
2
® 12
CO
2
+ 6 H
2
O
b.
12
CO
2
+ 6 H
2
O
A
B
C
7.
According to the following chemical equation:
2 C
6
H
6
+ 15 O
2
® 12
CO
2
+ 6 H
2
O
What are the products?
a.
2 C
6
H
6
+ 15 O
2
c.
2 C
6
H
6
+ 15 O
2
® 12
CO
2
+ 6 H
2
O
b.
12
CO
2
+ 6 H
2
O
A
B
C
D
E
8.
Determine the coefficients to balance the following chemical equation:
___Fe + ___O
2
®
___Fe
2
O
3
a.
2, 3, 1
d.
2, 7, 1
b.
1, 3, 2
e.
4, 3, 2
c.
4, 2, 2
A
B
C
D
E
9.
Determine the coefficients to balance the following chemical equation:
___ NaI + ___ Pb(NO
3
)
2
®
___ NaNO
3
+ ___ PbI
2
a.
2, 2, 2, 1
d.
1, 2, 1, 2
b.
2, 1, 2, 1
e.
1, 1, 1, 2
c.
1, 2, 2, 2