Wizard Test Maker

Name: ______________________ Honors Chem
3rd quarter review m/c
1. What occurs as a salt dissolves in pure water?
(A)The number of ions in the solution
decreases, and the freezing point decreases.
(B) The number of ions in the solution increases,
and the freezing point increases.
(C) The number of ions in the solution increases,
and the freezing point decreases.
(D)The number of ions in the solution
decreases, and the freezing point increases.
2. Compared to pure water, an aqueous solution of
calcium chloride has a
(A)higher boiling point and higher freezing
point
(B) higher boiling point and lower freezing point
(C) lower boiling point and higher freezing point
(D)lower boiling point and lower freezing point
3. A 1 kilogram sample of water will have the
highest freezing point when it contains
(A)1 × 10 21 dissolved particles
(B) 1 × 10 17 dissolved particles
(C) 1 × 10 19 dissolved particles
(D)1 × 10 23 dissolved particles
4. Compared to a 0.1 M aqueous solution of NaCl,
a 0.8 M aqueous solution of NaCl has a
(A)higher boiling point and a higher freezing
point
(B) higher boiling point and a lower freezing
point
(C) lower boiling point and a higher freezing
point
(D)lower boiling point and a lower freezing
point
5. Which solution has the highest boiling point at
standard pressure?
(A) 0.10 M KCl(aq)
(B) 0.10 M K 2 SO 4 (aq)
(C) 0.10 M K 3 PO 4 (aq)
(D) 0.10 M KNO 3 (aq)
6. Which compound is most soluble in water?
(A)silver chloride (C) silver nitrate
(B) silver acetate (D)silver sulfate
7. Under which conditions of temperature and
pressure would a 1-liter sample of a real gas
behave most like an ideal gas?
(A)l00. K and 0.l atm (C) 500. K and 0.1 atm
(B) 100. K and 10 atm (D)500. K and 10 atm
8. Under which conditions of temperature and
pressure does oxygen gas behave least like an
ideal gas?
(A)low temperature and low pressure
(B) low temperature and high pressure
(C) high temperature and low pressure
(D)high temperature and high pressure
9. According to the kinetic molecular theory, the
molecules of an ideal gas
(A)have a strong attraction for each other
(B) are closely packed in a regular repeating
pattern
(C) move in random, constant, straight-line
motion
(D)have significant volume
10. An assumption of the kinetic theory of gases is
that the particles of a gas have
(A)little attraction for each other and a
significant volume
(B) strong attraction for each other and a
significant volume
(C) strong attraction for each other and an
insignificant volume
(D)little attraction for each other and an
insignificant volume
11. Which gas would deviate least from ideal gas
behavior at low temperatures?
(A)He (C) HCl
(B) Cl2 (D)CO2 12. A rigid cylinder contains a sample of gas at
STP. What is the pressure of this gas after the
sample is heated to 410. K?
(A)1.5 atm (C) 0.67 atm
(B) 1.0 atm (D)0.50 atm
13. Which isotope is used to treat cancer?
(A)U-238 (C) Co-60
(B) Pb-206 (D)C-14

14. The table below shows data for the temperature,
pressure, and volume of four gas samples.
Which two gas samples have the same total
number of molecules?
(A)B and C (C) A and B
(B) B and D (D)A and C
15. Each stoppered flask below contains 2 liters of a
gas at STP.
Each gas sample has the same
(A)number of molecules
(B) number of atoms
(C) mass
(D)density
16. A gas occupies a volume of 444 mL at 273 K
and 79.0 kPa. What is the final kelvin
temperature when the volume of the gas is
changed to 1880 mL and the pressure is changed
to 38.7 kPa?
(A)31.5 K (C) 566 K
(B) 292 K (D)2360 K
17. Which particle has the greatest mass?
(A)an alpha particle (C) a positron
(B) a neutron (D)a beta particle
18. The diagrams below represent four 500milliliter
flasks. Each flask contains the gas
represented by its symbol. All gas samples are at
STP.
Each flask contains the same number of
(A)atoms, only
(B) molecules, only
(C) atoms and molecules
19. Which graph shows the pressure-temperature
relationship expected for an ideal gas?
(A)
(B)
(C)
(D)
20. A cylinder with a tightly fitted piston is shown
in the diagram below.
As the piston moves downward, the number of
molecules of air in the cylinder
(A)decreases (C) remains the same
(B) increases

21. Which graph represents the relationship between
pressure and volume for a sample of an ideal gas
at constant temperature?
(A)
(B)
(C)
(D)
22. A gas has a volume of 1,400 milliliters at a
temperature of 20. K and a pressure of 1.0 atm.
What will be the new volume when the
temperature is changed to 40. K and the pressure
is changed to 0.50 atm?
(A)350 mL (C) 1,400 mL
(B) 750 mL (D)5,600 mL
23. What is the molarity of a solution containing 20.
grams of NaOH in 0.50 liter of solution?
(A)1.0 (C) 0.50
(B) 2.0 (D)10.
24. Which graph best shows the relationship
between the pressure of a gas and its average
kinetic energy at constant volume?
(A)
(B)
(C)
(D)
25. The volume of a sample of a gas at 273ºC is
200. liters. If the volume is decreased to 100.
liters at constant pressure, what will be the new
temperature of the gas?
(A)100. K (C) 546 K
(B) 0 K (D)273 K
26. Which of the following gases would have the
slowest rate of diffusion when all of the gases
are held at the same temperature and pressure?
(A)NO (C) O2 (B) CO2 (D)N2

27. At a temperature of 273 K, a 400.-milliliter gas
sample has a pressure of 760. millimeters of
mercury. If the pressure is changed to 380.
millimeters of mercury, at which temperature
will this gas sample have a volume of 551
milliliters?
(A)100 K (C) 188 K
(B) 546 K (D)273 K
28. When 7.00 moles of gas A and 3.00 moles of gas
B are combined, the total pressure exerted by the
gas mixture is 76.0 kPa. What is the partial
pressure exerted by gas A in this mixture?
(A)53.2 kPa (C) 76.0 kPa
(B) 7.60 kPa (D)22.8 kPa
29. A flask contains a mixture of N2 (g) and O2 (g) at
STP. If the partial pressure exerted by the N
2 (g) is 40.0 kPa, the partial pressure of the O
2 (g) is
(A)61.3 kPa (C) 720 kPa
(B) 21.3 kPa (D)37.3 kPa
30. The stoppered tubes below, labeled A through D
, each contain a different gas.
When the tubes are unstoppered at the same
time and under the same conditions of
temperature and pressure, from which tube will
gas diffuse at the fastest rate?
(A)A (C) C
(B) B (D)D
31. Which compound has the lowest vapor pressure
at 50°C?
(A)propanone (C) ethanoic acid
(B) ethanol (D)water
32. Based on Reference Table H, which substance
has the weakest intermolecular forces?
(A)water (C) propanone
(B) ethanol (D)ethanoic acid
33. When the vapor pressure of water is 30 kPa, the
temperature of the water is
(A)20°C (C) 70°C
(B) 40°C (D)100°C
34. When NaCl(s) is dissolved in H 2 O(…), the
sodium ion is attracted to the water molecule's
(A)negative end, which is oxygen
(B) positive end, which is oxygen
(C) positive end, which is hydrogen
(D)negative end, which is hydrogen
35. According to Reference Table F, which
compound is most soluble in water?
(A)ZnSO4 (C) ZnCO3 (B) BaCO3 (D)BaSO4 36. Based on Reference Table F, which of these
saturated solutions has the lowest concentration
of dissolved ions?
(A)MgCl 2 (aq) (C) NaCl(aq)
(B) NiCl 2 (aq) (D)AgCl(aq)
37. Based on Reference Table G, what is the
maximum number of grams of KCl(s) that will
dissolve in 200 grams of water at 50°C to
produce a saturated solution?
(A)38 g (C) 58 g
(B) 42 g (D)84 g
38. As the temperature increases from 0ºC to 25ºC
the amount of NH 3 that can be dissolved in 100
grams of water
(A)increases by 10 grams
(B) decreases by 40 grams
(C) increases by 40 grams
(D)decreases by 10 grams
39. Under which conditions of temperature and
pressure is a gas most soluble in water?
(A)low temperature and high pressure
(B) high temperature and low pressure
(C) low temperature and low pressure
(D)high temperature and high pressure
40. What is the total number of moles of solute in
250 milliliters of a 1.0 M solution of NaCl?
(A)1.0 mole (C) 0.50 mole
(B) 0.25 mole (D)42 moles

41. Base your answer to the following question on
the diagram below which represents the
solubility curve of salt X. The four points on the
diagram represent four solutions of salt X.
Which point represents the most concentrated
solution of salt X?
(A)A (C) C
(B) B (D)D
42. A radioactive isotope used in the study of many
organic reaction mechanisms is
(A)carbon-12 (C) oxygen-16
(B) carbon-14 (D)oxygen-18
43. Given the diagram below that shows carbon
dioxide in an equilibrium system at a
temperature of 298 K and a pressure of 1 atm:
Which changes must increase the solubility of
the carbon dioxide?
(A)increase pressure and decrease temperature
(B) decrease pressure and decrease temperature
(C) decrease pressure and increase temperature
(D)increase pressure and increase temperature
44. A saturated solution of NaNO 3 is prepared at
60.ºC using 100. grams of water. As this
solution is cooled to 10.ºC, NaNO 3 precipitates
(settles) out of the solution. The resulting
solution is saturated. Approximately how many
grams of NaNO 3 settled out of the original
solution?
(A)46 g (C) 85 g
(B) 61 g (D)126 g
45. A 20.-milliliter sample of 0.60 M HCl is diluted
with water to a volume of 40. milliliters. What is
the new concentration of the solution?
(A)0.15 M (C) 0.30 M
(B) 0.60 M (D)1.2 M
46. What is the molarity of a solution of KNO 3
(molecular mass = 101) that contains 404 grams
of KNO 3 in 2.00 liters of solution?
(A)1.00 (C) 0.500
(B) 2.00 (D)4.00
47. How many grams of ammonium chloride (gram
formula mass = 53.5 g) are contained in 0.500 L
of a 2.00 M solution?
(A)26.5 g (C) 107 g
(B) 53.5 g (D)10.0 g
48. What is the concentration expressed in parts per
million of a solution containing 5.0 grams of NH
4 Cl in 95.0 grams of H 2 O?
(A)5.0 × 10 4 ppm (C) 5.3 × 10 4 ppm
(B) 2.0 × 10 7 ppm (D)1.9 × 10 7 ppm
49. What is the concentration expressed in parts per
million of a solution containing 15.0 grams of
KNO 3 in 65.0 grams of H 2 O?
(A)1.88 × 10 5 ppm (C) 2.31 × 10 5 ppm
(B) 2.00 × 10 5 ppm (D)5.33 × 10 6 ppm
50. Which solution is the most concentrated?
(A)1 mole of solute dissolved in 1 liter of
solution
(B) 2 moles of solute dissolved in 3 liters of
solution
(C) 6 moles of solute dissolved in 4 liters of
solution
(D)4 moles of solute dissolved in 8 liters of
solution

51. The decay of which radioisotope can be used to
estimate the age of the fossilized remains of an
insect?
(A)I-131 (C) C-14
(B) Rn-222 (D)Co-60
52. Given the equation:
14 4
7 N + 2He X + 17
8 O
When the equation is balanced correctly, which
particle is represented by X?
(A) 1
0
0n (C) –1e H (D)2
(B) 1
1
53. According to the equation:
X 208
82 Pb + 4 2 He
1 H
The nucleus correctly represented by X is
204
84 Po (C) 80 Bi
212
Hg (D)
(A) 212
(B) 204
80
84 Pb
54. Which type of radioactive emission has a
positive charge and weak penetrating power?
(A)neutron (C) gamma ray
(B) beta particle (D)alpha particle
55. Given the reaction:
9
4
1 6 4
Be + H - Li +
1
3
2 He
Which type of reaction is represented?
(A)artificial transmutation
(B) fission
(C) natural transmutation
(D)fusion
56. Given the balanced equation representing a
nuclear reaction:
235 1
92 U + 0n 142 91
Ba + Kr + 3X + energy
56
Which particle is represented by X?
(A) 1
0
0n (C) –1e (B) 1 1H (D)42H 57. Which material can be used to lower the
velocity of neutrons in a nuclear reactor?
(A)sodium (C) graphite
(B) silver (D)iron
36
58. Cobalt-60 and iodine-131 are radioactive
isotopes that are used in
(A)dating geologic formations
(B) nuclear power
(C) medical procedures
(D)industrial measurements
59. Given the diagram representing a reaction:
Which phrase best describes this type of
reaction and the overall energy change that
occurs?
(A)nuclear, and energy is released
(B) chemical, and energy is released
(C) nuclear, and energy is absorbed
(D)chemical, and energy is absorbed
60. A mixture of emanations from radioactive atoms
is passed through electrically charged plates, as
shown in the diagram below.
The nuclear emanations 1, 2, and 3 are called,
respectively,
(A)beta, gamma, and alpha
(B) alpha, beta, and gamma
(C) gamma, beta, and alpha
(D)gamma, alpha, and beta

61. An original sample of the radioisotope fluorine-
21 had a mass of 80.0 milligrams. Only 20.0
milligrams of this original sample remain
unchanged after 8.32 seconds. What is the halflife
of fluorine-21?
(A)1.04s (C) 4.16 s
(B) 2.08 (D)8.3
62. Radioisotopes used for medical diagnosis must
have
(A)short half-lives and be slowly eliminated by
the body
(B) long half-lives and be quickly eliminated by
the body
(C) long half-lives and be slowly eliminated by
the body
(D)short half-lives and be quickly eliminated by
the body
63. An original sample of K-40 has a mass of 25.00
grams. After 3.9 × 10 9 years, 3.125 grams of the
original sample remains unchanged. What is the
half-life of K-40?
(A)2.6 × 10 9 y (C) 1.3 × 10 9 y
(B) 1.2 × l0 9 y (D)3.9 × 10 9 y
64. Which reaction is an example of natural
transmutation?
(A) 27 4
13Al + 2He 30 1
15P + 0n (B) 238
92 U + 1 0n 239
94 Pu + 2 0 -1e (C) 239
94 Pu 235 4
92 U + 2He (D) 239
94 Pu + 1 0n 147 90
56 Ba + 38Sr + 310 n
65. The purpose of the high-density concrete used in
some nuclear reactors is to
(A)shield the reactor walls from radiation
damage
(B) control the speed of the neutrons
(C) control the rate of the nuclear reaction
(D)shield the reactor personnel from radiation
exposure
66. Which fraction of an original 20.00-gram
sample of nitrogen-16 remains unchanged after
36.0 seconds?
(A) 1
8
(B) 1
32 1
32
(C) 1
16
1
16
(D) 1
5
67. If 1 8 1 8 of an original sample of krypton-74 remains
unchanged after 34.5 minutes, what is the halflife
of krypton-74?
(A)34.5 min (C) 46.0 min
(B) 23.0 min (D)11.5 min
68. Which list of particles is in order of increasing
mass?
(A)alpha particle electron proton
(B) electron proton alpha particle
(C) proton electron alpha particle
(D)proton alpha particle electron
69. In which component of a fission reactor is the
element cadmium used?
(A)moderator (C) shielding
(B) control rods (D)cooling system
70. The diagram below represents radiation passing
through an electric field.
The arrow labeled A most likely represents
(A)a positron (C) alpha radiation
(B) gamma radiation (D)an electron
71. A radioactive source emits radiation which is
deflected as shown in the diagram below.
This radiation could be
(A) 1 1H (C) 4 2He (B) 0
–1e (D) 1 0n

72. Which substance is used as a coolant in a fission
reactor?
(A)B(s) (C) Na(…)
(B) H 2 (g) (D)Cd(s)
73. Which two substances are most commonly used
for shielding in a nuclear reactor?
(A)beryllium and graphite
(B) water and heavy water
(C) molten sodium and molten lithium
(D)steel and high-density concrete
74. Which equation represents a fusion reaction?
(A) 14
6 C 0 14
–1e + 7 N
(B) 238
92 U + 4 2 He
241
94 Pu + 1 0 n
(C) 1 27
0n + 13Al
24
11Na + 4 2He (D) 2 2
1H + 1H 4
2He 75. In the reaction:
9
4Be + X 6 4
3Li +
2 He
The X represents
(A) 1
1
1H (C) 0n (B) 0 –1e (D)0 +1e 76. A fission reaction is similar to a fusion reaction
in that both reactions involve
(A)collisions between nuclei of high atomic
number
(B) collisions between nuclei of low atomic
number
(C) the conversion of energy to mass
(D)the conversion of mass to energy
77. A reaction will be spontaneous if it results in
products that have
(A)greater potential energy and more
randomness
(B) greater potential energy and less randomness
(C) lower potential energy and less randomness
(D)lower potential energy and more randomness
78. A potential energy diagram is shown below.
Which reaction would have the lowest
activation energy?
(A)the forward uncatalyzed reaction
(B) the forward catalyzed reaction
(C) the reverse catalyzed reaction
(D)the reverse uncatalyzed reaction
79. The potential energy diagram below shows the
reaction
X + Y Z.
When a catalyst is added to the reaction, it will
change the value of
(A)1 and 2 (C) 2 and 3
(B) 1 and 3 (D)3 and 4
80. A reaction is most likely to occur when reactant
particles collide with
(A)proper orientation, only
(B) neither proper energy nor proper orientation
(C) both proper energy and proper orientation
(D)proper energy, only

81. In the potential energy diagram below, which
letter represents the potential energy of the
activated complex?
(A)A (C) C
(B) B (D)D
82. Given the reaction at 1 atm and 298 K:
The heat of reaction, H, is
(A)positive and the reaction is not spontaneous
(B) negative and the reaction is spontaneous
(C) negative and the reaction is not spontaneous
(D)positive and the reaction is spontaneous
83. Adding a catalyst to a chemical reaction changes
the rate of reaction by causing
(A)an increase in the heat of reaction
(B) a decrease in the activation energy
(C) a decrease in the heat of reaction
(D)an increase in the activation energy
84. After being ignited in a Bunsen burner flame, a
piece of magnesium ribbon burns brightly,
giving off heat and light. In this situation, the
Bunsen burner flame provides
(A)heat of vaporization (C) heat of reaction
(B) ionization energy (D)activation energy
85. Which balanced equation represents an
endothermic reaction?
(A)N 2 (g) + 3H 2 (g) 2NH 3 (g)
(B) CH 4 (g) + 2O 2 (g) CO 2 (g) + 2H 2 O(…)
(C) C(s) + O 2 (g) CO 2 (g)
(D)N 2 (g) + O 2 (g) 2NO(g)
86. Which equation represents an exothermic
reaction at 298 K?
(A)
(B)
(C)
(D)
87. Which conditions will increase the rate of a
chemical reaction?
(A)increased temperature and decreased
concentration of reactants
(B) decreased temperature and increased
concentration of reactants
(C) increased temperature and increased
concentration of reactants
(D)decreased temperature and decreased
concentration of reactants
88. A 1.0-gram piece of zinc reacts with 5 milliliters
of HCl(aq). Which of these conditions of
concentration and temperature would produce
the greatest rate of reaction?
(A)2.0 M HCl(aq) at 20.°C
(B) 1.0 M HCl(aq) at 40.°C
(C) 1.0 M HCl(aq) at 20.°C
(D)2.0 M HCl(aq) at 40.°C
89. Given the balanced equation:
Which statement best describes this process?
(A)It is exothermic and entropy decreases.
(B) It is exothermic and entropy increases.
(C) It is endothermic and entropy increases.
(D)It is endothermic and entropy decreases.

90. A 1.0-gram sample of powdered Zn reacts faster
with HCl than a single 1.0-gram piece of Zn
because the atoms in powdered Zn have
(A)higher average kinetic energy
(B) lower average kinetic energy
(C) more contact with the H + ions in the acid
(D)less contact with the H + ions in the acid
91. Salt A and salt B were each dissolved in separate
beakers of water at 21°C. The temperature of the
salt A solution decreased, and the temperature of
the salt B solution increased.
Based on these results, which conclusion is
correct?
(A)The water gained energy from salt A and lost
energy to salt B.
(B) The water lost energy to salt A and gained
energy from salt B.
(C) The water gained energy from both salt A
and salt B.
(D)The water lost energy to both salt A and salt
B.
92. Given the reaction:
2 H 2 (g) + O 2 (g) 2 H 2 O(…) + 571.6 kJ
What is the approximate (H for the formation
of 1 mole of H 2 O(…)?
(A)+285.8 kJ (C) –571.6 kJ
(B) +571.6 kJ (D)–285.8 kJ
93. Given the potential energy diagram for a
reaction:
Which interval on this diagram represents the
difference between the potential energy of the
products and the potential energy of the
reactants?
(A)1 (C) 2
(B) 4 (D)3

Base your answers to questions 94 and 95 on the
potential energy diagram of a chemical reaction
shown below.
94. Which arrow represents the activation energy
for the forward reaction?
(A)A (C) C
(B) B (D)D
95. The forward reaction is best described as an
(A)endothermic reaction in which energy is
absorbed
(B) exothermic reaction in which energy is
released
(C) exothermic reaction in which energy is
absorbed
(D)endothermic reaction in which energy is
released

1. C
2. B
3. B
4. B
5. C
6. C
7. C
8. B
9. C
10. D
11. A
12. A
13. C
14. D
15. A
16. C
17. A
18. B
19. D
20. C
21. B
22. D
23. A
24. D
25. D
26. B
27. C
28. A
29. A
30. A
31. C
32. C
33. C
34. A
35. A
36. D
37. D
38. B
39. A
40. B
41. D
42. B
43. A
44. A
45. C
46. B
47. B
48. A
49. A
50. C
Answer Key
[New Exam]
51. C
52. B
53. A
54. D
55. A
56. A
57. C
58. C
59. A
60. A
61. C
62. D
63. C
64. C
65. D
66. B
67. D
68. B
69. B
70. D
71. B
72. C
73. D
74. D
75. A
76. D
77. D
78. B
79. C
80. C
81. B
82. B
83. B
84. D
85. D
86. A
87. C
88. D
89. C
90. C
91. B
92. D
93. B
94. A
95. A