WorksheetsPS: Unit 5 Review
Total questions: 37
Worksheet time: 2hrs 14mins
Name
Class
Date
1.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
2.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
3.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
4.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
5.
_P4+_O2
--->
_P2O3
--->
_P2O3
a)
3 P4+1 O2 ---> 2 P2O3
b)
1 P4+1 O2 ---> 2 P2O3
c)
1 P4+ 3 O2 ---> 2 P2O3
d)
1 P4+ 2 O2 ---> 3 P2O3
6.
_BaS + _PtF2
--->
_BaF2 + _PtS
--->
_BaF2 + _PtS
a)
1 BaS + 1 PtF2
--->
1 BaF2 + 1 PtS
--->
1 BaF2 + 1 PtS
b)
4 BaS + 2 PtF2
--->
1 BaF2 + 1 PtS
--->
1 BaF2 + 1 PtS
c)
1 BaS + 2 PtF2
--->
2 BaF2 + 2 PtS
--->
2 BaF2 + 2 PtS
d)
1 BaS + 3 PtF2
--->
1 BaF2 + 2 PtS
--->
1 BaF2 + 2 PtS
7.
_NaF + _Br2
--->
_NaBr + _F2
--->
_NaBr + _F2
a)
1NaF + 2 Br2
--->
1 NaBr + 2 F2
--->
1 NaBr + 2 F2
b)
2NaF + 2 Br2
--->
2 NaBr + 2 F2
--->
2 NaBr + 2 F2
c)
2 NaF + 3 Br2
--->
1 NaBr + 2 F2
--->
1 NaBr + 2 F2
d)
2 NaF + 1 Br2
--->
2 NaBr + 1 F2
--->
2 NaBr + 1 F2
8.
Balance this equation, Al2O3 ---> Al + O2
a)
Cannot be balanced
b)
2Al2O3 ---> 2Al + 3O2
c)
2Al2O3 ---> 4Al + 3O2
d)
3Al2O3 ---> 2Al + O2
9.
Name this reaction, CO2 + H2O --> H2CO3
a)
Decomposition
b)
Single Replacement
c)
Synthesis
d)
Combustion
10.
In the equation, 2Mg + O2 ---> 2MgO, which are the reactants?
a)
Mg and O
b)
MgO
c)
Mg and MgO
d)
O and MgO
11.
Which is a Decomposition Reaction?
a)
AB --> A + B
b)
ab ----> a + B
c)
AB + CD ----> AC +BC
d)
AB+ C ----> AC + B
12.
This image represents
a)
a double replacement reaction
b)
a decomposition reaction
c)
a single replacement reaction
d)
a complex compound reaction
13.
How many elements are in C6H12O6?
a)
1
b)
3
c)
12
d)
24
14.
How many atoms are in C6H12O6?
a)
1
b)
3
c)
12
d)
24
15.
How many Al atoms are represented? 4Al2O3
a)
2
b)
8
c)
5
d)
20
16.
How many total atoms are represented? 4Al2O3
a)
2
b)
8
c)
5
d)
20
17.
a copper penny turning greenish after a few years.
a)
Chemical Change
b)
Physical Change
18.
An gel ice pack getting cold after you put it in the freezer for an hour.
a)
Chemical Change
b)
Physical Change
19.
The large number in front of a chemical formula or compound is the ___________.
a)
coefficient
b)
product
c)
physical
d)
chemical
20.
In every balanced chemical equation, each side of the equation has the same number of ____.
a)
coefficients
b)
moles
c)
molecules
d)
atoms of each element
21.
2Mg + Fe2O3 --> 2Fe + 3MgO
a)
synthesis
b)
combustion
c)
decomposition
d)
single replacement
22.
Ca(OH)2 + Al2(SO4)3 --> CaSO4 + Al(OH)3
a)
synthesis
b)
combustion
c)
double replacement
d)
single replacement
23.
PbSO4 --> PbSO3 + O2
a)
synthesis
b)
decomposition
c)
double replacement
d)
single replacement
24.
H2O + SO3 --> H2SO4
a)
synthesis
b)
combustion
c)
double replacement
d)
decomposition
25.
The pH scale is a range from:
a)
1-7
b)
0-14
c)
1-14
d)
1-20
26.
A(n) ______ is a substance with a pH less than 7
a)
Acid
b)
Alkaline
c)
Base
d)
Buffer
27.
A(n) _______ is a substance with a pH greater than 7.
a)
Base
b)
Acid
c)
Buffer
d)
Water
28.
What is the only substance with a neutral pH of 7?
a)
Milk
b)
Orange Juice
c)
Water
d)
Blood
29.
Which solution releases H+ in solution?
a)
Base
b)
Acid
c)
Buffer
d)
Water
30.
This substance releases OH- into solution
a)
Acid
b)
Base
c)
Neutral
31.
Ca(OH)2 is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
32.
HBr is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
33.
LiOH is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
34.
HNO3 is an example of a(n)
a)
Acid
b)
Base
c)
Neutral
35.
How many grams of sodium nitrate, NaNO3, are soluble in 100 g of water at 10 ºC?
a)
80 grams
b)
100 grams
c)
40 grams
d)
10 grams
36.
When 20 grams of potassium chlorate, KClO3, is dissolved in 100 grams of water at 80 ºC, the solution can be correctly described as:
a)
supersaturated
b)
saturated
c)
unsaturated
37.
When 30 grams of potassium nitrate, KNO3, is dissolved in 100 grams of water at 20 ºC, the solution can be correctly described as:
a)
saturated
b)
unsaturated
c)
supersaturated
100 %
