phases
Name:
1.
Date:
The temperature at which all molecular motion
stops is
A.
C.
460 C.
B.
0 K.
4.
A scientist uses an instrument to observe the
pattern of molecules in a substance. The picture
below shows what the scientist sees.
273 K.
D. 0 C.
What state of matter is the scientist most likely
observing?
A.
2.
B.
liquid
C.
vapor
D. solid
The speci c heat of copper is about
0.4 joules/gram C. How much heat is needed to
change the temperature of a 30-gram sample of
copper from 20.0 C to 60.0 C?
A.
1000 J
B.
720 J
C.
480 J
D. 240 J
5.
3.
gas
The illustration below shows four containers. Each
container is full of helium gas at a di erent
temperature.
If all of the containers are closed and have a
pressure of 1 atm, which container has helium
particles with the greatest average kinetic energy?
A.
1
B.
2
C.
3
D. 4
page 1
Within a substance, atoms that collide frequently
and move independently of one another are most
likely in a
A.
liquid.
B.
solid.
C.
gas.
D. crystal.
6.
Use the information below to answer the following
question.
7.
The following graph shows the change in
temperature of a sample of H2 O, which begins as
ice, as thermal energy is added.
What is happening during time
Which region of the graph represents water H2 O
in the liquid form only?
A.
1
B.
2
C.
3
The graph shows the temperature changes as a
sample of ice is heated.
D. 4
A.
The liquid is evaporating.
B.
The liquid is feezing.
C.
The solid is freezing.
?
D. The solid is melting.
page 2
phases
8.
A solid substance is heated at a uniform rate. This
graph shows how the temperature of the substance
changes as heat is added.
10.
This diagram represents a phase diagram for a
substance.
According to the energy diagram shown, the
substance will boil at what temperature?
A.
C.
60 C
B.
90 C
10 C
At which point do solid, liquid, and gas phases
exist in equilibrium?
D. 140 C
A.
9.
Consider this phase diagram:
11.
12.
At what temperature does the normal boiling point
occur?
A.
45 C
B.
60 C
C.
100 C
D. 110 C
page 3
1
B.
2
C.
3
D. 4
The volume of 400 mL of chlorine gas at 400 mm
Hg is decreased to 200 mL at constant temperature.
What is the new gas pressure?
A.
400 mm Hg
B.
300 mm Hg
C.
800 mm Hg
D. 650 mm Hg
Under which of the following sets of conditions
will a 0.50 mole sample of helium occupy a
volume of 11.2 liters?
A.
298 K and 0.90 atm
B.
273 K and 1.10 atm
C.
373 K and 0.50 atm
D. 273 K and 1.00 atm
phases
13.
The air inside a beach ball is at a temperature
of 25 C and a pressure of 1.0 atm. If the ball
contains 0.85 mol of air, what is its volume?
A.
14.
15.
1.7 L
B.
6.1 L
C.
21 L
17.
D. 27 L
A gas has a volume of 1400 milliliters at a
temperature of 20 K and a pressure of 760 mm Hg.
What will be the volume when the temperature is
changed to 40 K and the pressure is changed to
380 mm Hg?
A.
350 mL
B.
750 mL
C.
1400 mL
D. 5600 mL
The total pressure in a closed vessel containing
N2 , O2 and CO2 is 30 atm. If the partial pressure
of N2 is 4 atm, and the partial pressure of O2 is
6 atm, what is the partial pressure of CO2 ?
A.
20 atm
B.
30 atm
C.
40 atm
D. 50 atm
18.
A 20-milliliter sample of a gas is at 546 K
and has a pressure of 6.0 atmospheres. If the
temperature is changed to 273 K and the pressure
to 2.0 atmospheres, the new volume of the gas
will be
A.
3.3 mL
B.
13 mL
C.
30 mL
D. 120 mL
If 10.0 liters of H2 (g) at STP is heated to a
temperature of 546 K, pressure remaining constant,
the new volume of the gas will be
A.
5.00 `
B.
20.0 `
C.
15.0 `
D. 40.0 `
19.
Given the reaction:
2C2 H6 (g) + 7O2 (g) ! 4CO2 (g) + 6H2 O(g)
16.
At STP, what is the total volume of CO2 (g) formed
when 6.0 liters (L) of C2 H6 (g) are completely
oxidized?
The pressure on 200 milliliters of a gas at constant
temperature is changed from 380 torr to 760 torr.
The new volume of the gas is
A.
100 mL
B.
C.
400 mL
D. 800 mL
A.
200 mL
page 4
24 L
B.
12 L
C.
6.0 L
D. 4.0 L
phases
20.
Given the reaction:
22.
2SO2 (g) + O2 (g) ! 2SO3 (g)
What is the total number of liters of SO3 produced
when 32.0 liters of SO2 reacts completely?
A.
21.
11.2 L
B.
32.0 L
C.
40.0 L
A.
1.0
B.
2.0
C.
10
8.0 C
B.
14 C
C.
30. C
D. 55 C
D. 44.8 L
23.
Given the reaction: 2H2 (g) + O2 (g) ! 2H2 O(g).
How many liters of H2 (g) are required to produce
a total of 10 liters of H2 O(g)?
A.
A 36-gram sample of water has an initial
temperature of 22 C. After the sample absorbs
1200 joules of heat energy, the nal temperature
of the sample is
A 200-milliliter sample of gas has a pressure
of 1 atmosphere. If the volume of the gas is
decreased to 50 milliliters at constant temperature,
the new pressure of the gas will be
A.
D. 20
page 5
1 atm
B.
2 atm
C.
3 atm
D. 4 atm
phases
Problem-Attic format version 4.4.218
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phases
11/20/2014
1.
Answer:
D
21.
Answer:
C
2.
Answer:
C
22.
Answer:
A
3.
Answer:
A
23.
Answer:
D
4.
Answer:
D
5.
Answer:
C
6.
Answer:
C
7.
Answer:
D
8.
Answer:
C
9.
Answer:
D
10.
Answer:
D
11.
Answer:
C
12.
Answer:
D
13.
Answer:
C
14.
Answer:
A
15.
Answer:
B
16.
Answer:
A
17.
Answer:
D
18.
Answer:
C
19.
Answer:
B
20.
Answer:
B