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Unit 8 Test Review College Prep
Unit 8 Test Review College Prep
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14
Answers
1
What coefficient is needed to balance this chemical equation?
12
3
2
6
2
What coefficient is needed to balance this chemical equation?
3
6
2
5
3
What type of reaction is this? NH
3
+ HCl → NH
4
Cl
decomposition
single displacement
synthesis
double displacement
4
Which of these particle diagrams could possibly represent 5 CO
2
(g)?
d
a
c
b
5
What type of reaction is this? C
3
H
8
+ 5 O
2
→ 3 CO
2
+ 4 H
2
O
double replacement
combustion
synthesis
single replacement
6
How many NO
3
-
ions are in Ca(NO
3
)
2
?
3
2
5
6
7
What type of reaction is this? (NH
4
)
2
CO
3
→ 2 NH
3
+ H
2
O + CO
2
single replacement
decomposition
synthesis
double replacement
8
This is a particle diagram of
4 KCl (aq)
2 KCl (l)
2 KCl (aq)
4 KCl (l)
9
How many C atoms are on the reactants side? CS
2
+ 4 CO → 5 C + 2 SO
2
3
5
6
4
10
What type of reaction is this? 2 Al(OH)
3
+ 3 H
2
SO
4
→ Al
2
(SO
4
)
3
+ 6 HOH
decomposition
double replacement
single replacement
synthesis
11
What coefficient is needed to balance this chemical equation?
3
1
4
2
12
What type of reaction is this? 2 B + 3 Mg(SO
4
)
2
→ 2 B(SO
4
)
3
+ 3 Mg
single displacement
synthesis
double displacement
decomposition
13
Balancing chemical equations involves changing
molecules
subscripts
coefficients
compounds
14
How many O atoms are in 2 SO
3
?
6
2
3
5
