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WorksheetsAP Chemistry Review Unit 9
Total questions: 80
Worksheet time: 2hrs 57mins
Name
Class
Date
1.
According to the activity series, which of the following single replacement reactions can occur?
a)
Ca + Al2(SO4)3
b)
Fe + NaOH
c)
Ni + MgSO4
d)
Al + KOH
2.
Which of the following equations represents the balanced synthesis reaction of iron (III) and oxygen?
a)
Fe + 3 O2 → Fe2O3
b)
3 Fe + 3 O2 → 2 Fe2O3
c)
2 Fe + O2 → Fe2O3
d)
4 Fe + 3 O2 → 2 Fe2O3
3.
What are the correct formulas and coefficients for the products of the following double-replacement reaction?
RbOH + H3PO4 →
RbOH + H3PO4 →
a)
Rb3PO4 + 3 H2O
b)
Rb(PO4)3 + H2O
c)
H3Rb + PO4OH
d)
RbPO4 + 2 H2O
4.
What are the correct formulas and coefficients for the products of the following single-replacement reaction?
Mg + Al(OH)3 →
Mg + Al(OH)3 →
a)
No Reaction
b)
Al + Mg(OH)3
c)
2 Al + 3 Mg(OH)2
d)
3 Al + MgOH3
5.
Which of the following would create a precipitate according to the solubility table?
a)
Ba(NO3)2
b)
K3PO4
c)
Cu(OH)2
d)
NH4Cl
6.
According to the solubility table, is NaCl soluble or insoluble?
a)
Soluble
b)
Insoluble
c)
Neither
d)
Soluble and Insoluble
7.
According to the solubility table, is AgCl soluble or insoluble?
a)
Soluble
b)
Insoluble
c)
Neither
d)
Both
8.
According to the solubility table, is MgO soluble or insoluble?
a)
Soluble
b)
Insoluble
c)
Neither
d)
Both
9.
What is the state of matter symbol for an insoluble compound?
a)
(s)
b)
(aq)
c)
(g)
d)
(l)
10.
What are the products of this reaction: Fe + Na2CO3 ?
a)
Na2 + Fe(CO3)2
b)
Na + CO3Fe
c)
Na + Fe2CO3
d)
No Reaction
11.
Which compound is higher in reactivity, Ag or Ca?
a)
Ag
b)
Ca
c)
Neither
d)
They're equal
12.
What are the products of this single replacement reaction: Mg + CuSO4
a)
Cu + MgSO4
b)
Cu + SO4Mg
c)
Cu + Mg(SO4)2
d)
No Reaction
13.
What is the generic formula for a single replacement reaction?
a)
A + BC ---> CA + B
b)
A + BC ---> BC + A
c)
A + BC ---> AB + C
d)
A + BC ---> AC + B
14.
Which element is highest in reactivity?
a)
Gold
b)
Lithium
c)
Lead
d)
Iron
15.
A compound that contains only carbon and hydrogen and that produces CO2 and H2O when burned is called a(n)
a)
binary compound
b)
carbonate
c)
ionic compound
d)
hydrocarbon
16.
The word equation for combustion is: hydrocarbon + oxygen --> water + ________ __________
a)
Carbon dioxide
b)
Limewater
17.
Predict the products for the this reaction:
K + HCl -->
K + HCl -->
a)
KCl + H2
b)
KHCl
c)
KH + Cl2
d)
KCl + H
18.
Predict the products for the this reaction:
Mg + CuCl2 -->
Mg + CuCl2 -->
a)
MgCl2 + Cu
b)
MgCl + Cu
c)
MgCu + Cl2
d)
CuMg + Cl2
19.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
Al(OH)3 --> Al2O3 + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
20.
How many different types/classifications of Chemical Reactions have we learned about?
a)
3
b)
4
c)
5
d)
6
21.
If you mixed NaCl and Pb(NO3)2 what solid would be produced?
a)
NaNO3
b)
PbCl2
c)
Na2Pb
d)
ClNO3
22.
In the reaction of K + AgNO3 what will the products be?
a)
K and AgNO3
b)
Ag and KNO3
c)
NO3 and AgK
d)
No reaction
23.
Predict the products: Na + KCl -->
a)
K and NaCl
b)
KNa and Cl
c)
NaKCl
d)
No reaction
24.
To predict if a single replacement reaction will take place you should use a(n)
a)
Activity series
b)
Solubility Chart
c)
Periodic Table
d)
Metal chart
25.
For the single element to replace an element in a compound it must be ____it on the activity series
a)
above
b)
below
c)
next to
26.
The symbol for a substance dissolved in water is
a)
(s)
b)
(l)
c)
(g)
d)
(aq)
27.
If an element is diatomic it should have a subscript of___
a)
2, always
b)
2, only when it is by itself
c)
it shouldn't have a subscript, it should have a coefficent
28.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
29.
Is this equation balanced?
a)
yes
b)
no
c)
Not enough information
30.
Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe
a)
Yes
b)
No
31.
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
_Al +_HCl --> _H2 +_AlCl3
a)
2, 6, 3, 2
b)
it is already balanced
c)
4, 12, 3, 4
d)
2, 1, 4, 5
32.
Balance this equation-
__P4 + __O2 --> __P2O3
__P4 + __O2 --> __P2O3
a)
it is already balanced
b)
2, 1, 3
c)
1, 2, 3
d)
1, 3, 2
33.
Balance this equation.
_CH4 + _O2 --> _CO2 + _H2O
_CH4 + _O2 --> _CO2 + _H2O
a)
1,2,1,1
b)
2,1,2,1
c)
1,2,1,2
d)
0,2,0,2
34.
Balance this equation.
_CF4 + _Br2 -- _CBr4 + _F2
_CF4 + _Br2 -- _CBr4 + _F2
a)
2,1,2,1
b)
1,2,2,1
c)
1,2,1,2
d)
2,2,2,2
35.
Balance this equation
_N2 + _H2 --> _NH3
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
36.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
37.
Balance this equation.
_SnO2 +_H2-->_Sn +_H2O
_SnO2 +_H2-->_Sn +_H2O
a)
1,1,2,1
b)
1,2,1,1
c)
1,2,1,2
d)
1,2,2,1
38.
Balance this equation-
_SeCl6+_O2>_SeO2+_Cl2
_SeCl6+_O2>_SeO2+_Cl2
a)
1,2,1,2
b)
1,1,1,3
c)
1,2,1,1
d)
2,1,1,1
39.
Balance this equation
_Zn+_HCl-->_ZnCl2 +_H2
_Zn+_HCl-->_ZnCl2 +_H2
a)
1,1,2,1
b)
1,1,1,2
c)
1,2,1,1
d)
2,1,1,1
40.
Balance this equation.
_N2+_O2->_H2O+_HNO3
_N2+_O2->_H2O+_HNO3
a)
not possible
b)
2,2,1,2
c)
2,1,1,4
d)
2,2,1,4
41.
What does the Law of Conservation of Mass state?
a)
Matter cannot be gained or lost in a chemical reaction.
b)
Matter can only be lost in a chemical reaction.
c)
Matter can only be gained in a chemical reaction.
d)
Matter can be gained and lost in a chemical reaction.
42.
What is the little number after an element in a chemical equation called.
Example: H2
Example: H2
a)
Coefficient
b)
Subscript
c)
Atom
d)
Equation
43.
What is the arrow in a chemical equation...
H2 + O --> H2O
H2 + O --> H2O
a)
Reactants
b)
Products
c)
Yields
d)
Chemical Equation
44.
At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?
a)
the product is doubled
b)
the product is half the mass of the reactants
c)
the mass is the same
d)
the mass changes depending on the reaction
45.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
46.
Balance this equation. _C3H9+_O2---> _CO2+_H2O
a)
1,5,12,8
b)
4,18,12,12
c)
2,9,6,6
d)
4,7,6,6
47.
How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O3
a)
2
b)
6
c)
1
d)
4
48.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
49.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
50.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number to the left of a formula.
51.
Evidence of a chemical reactions is anything that shows -
a)
a new substance has formed
b)
a solid dissolved in a liquid
c)
interaction between 2 gases
d)
a change in the state of matter
52.
One of the signs of a chemical reaction taking place is:
a)
Bubbles are produced
b)
Reactants are not combining
c)
Products are not forming
d)
Color is not changing
53.
Which of the following describes a precipitate?
a)
a liquid forms when a block of metal is heated
b)
a solid forms when one liquid is poured into another
c)
a gas forms when a solid is placed in a liquid
d)
bubbles form when an acid is poured on a rock
54.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
55.
You know you a chemical reaction has occurred if
a)
there is a precipitate.
b)
there is a color change.
c)
there is a temperature change.
d)
All of these answers are evidence.
56.
An empirical formula:
a)
is a formula that calculates the coefficients of a compound in a balanced equation.
b)
is the simplest whole-number ratio of moles of elements in the compound.
57.
What is the empirical formula of the following molecular formula: C3H6
a)
C3H6
b)
CH2
c)
C2H4
d)
CH3
58.
Which one is an empirical formula?
a)
H2O2
b)
C2H6O12
c)
CaCl2
d)
N2O8
59.
Which pair has the same empirical formula?
a)
NaCrO4 and Na2Cr2O7
b)
C2H4O2 and C6H12O6
c)
C3H6O3 and C2H6O2
d)
CH4 and C2H6
60.
Which of the following is considered an empirical formula?
a)
CH3COOH
b)
C6H12O6
c)
H2O
61.
What is the molecular formula if the empirical formula is C2H5 and the molecular molar mass is 58.14 g/mol?
a)
C2H5
b)
C4H10
c)
C1H2.5
d)
C4H8
62.
What is the empirical formula for the following molecular formula: C6H14
a)
C6H14
b)
C3H7
c)
CH2
d)
CH3
63.
What is the molecular formula if the empirical formula is CH2O and the molecular molar mass is 180.18?
a)
CH2O
b)
C2H4O2
c)
C4H8O4
d)
C6H12O6
64.
What is the molecular formula for a compound with the empirical formula: K2SO4 and a molecular mass of 696g.
a)
K2SO4
b)
K8SO16
c)
K8S4O8
d)
K8S4O16
65.
What is the molecular formula of a compound with an empirical formula of C2OH4 and a molar mass of 88 grams per mole?
a)
C2O4H8
b)
C8O2H4
c)
C4O2H8
d)
C4O8H2
66.
Find the percent composition of each element in N2S2
a)
69.6% N, 30.4%S
b)
15.2% N, 84.8% S
c)
30.4% N, 69.6% S
d)
65.2% N, 34.8% S
67.
% of Ca in Ca(CN)2
a)
60.6% Ca
b)
43.5% Ca
c)
50.0% Ca
d)
75.5% Ca
68.
What is the mass percentage of carbon in carbon dioxide?
a)
27.3%
b)
42.9%
c)
57.1%
d)
72.7%
69.
What percent of Zn3(PO4)2 is zinc?
a)
33.15%
b)
16.04%
c)
50.81%
d)
19.68%
70.
a solution in which the solvent is water
a)
solute
b)
solvent
c)
spectator ion
d)
aqueous solution
71.
ion that does not participate in a reaction
a)
spectator ion
b)
solvent
c)
solute
d)
aqueous solution
72.
What is the formula for Hydroxide?
a)
MnO4-
b)
OH-
c)
NH4+
d)
PO33-
73.
What is the name for PO43-
a)
phosphate
b)
phosphite
c)
carbonate
d)
hydroxide
74.
What is the name for NH4+?
a)
Chlorate
b)
Sulfate
c)
Ammonium
d)
Permanganate
75.
What is the formula for Nitrate?
a)
NH4+
b)
ClO2-
c)
ClO-
d)
NO3-
76.
What is the name for SO42-?
a)
sulfate
b)
sulfite
77.
What is the name for CO32-?
a)
carbon oxide
b)
carbonate
78.
What is the name for ClO3-?
a)
chlorite
b)
chlorate
79.
What is the name of this polyatomic ion? MnO4-
a)
Carbonate
b)
Permanganate
c)
Phosphate
d)
Chromate
80.
What is the formula for chlorite?
a)
ClO1-
b)
ClO31-
c)
ClO21-
d)
Cl21-
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