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Gas Laws

Total questions: 55

Worksheet time: 55mins

Name
Class
Date
1.

Which gas law to solve: A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL?

a)

Pt = P1 + P2 + P3 + ...

b)

P1V1 = P2V2

c)

V1/T1 = V2/T2

d)

P1V1/T1 = P2V2/T2

2.

Which gas law to solve: If a nitrogen gas occupies a volume of 500 ml at a pressure of 0.971atm. What volume will the gas occupy at a pressure of 1.50 atm?

a)

P1V1 = P2V2

b)

PV = nRT

c)

P1/T1 = P2/T2

d)

V1/n1 = V2/n2

3.

Which gas law to solve: Determine the number of moles in a container of gas at STP with a volume of 99.2 L.

a)

V1/n1 = V2/n2

b)

PV = nRT

c)

P1/T1 = P2/T2

d)

V1/T1 = V2/T2

4.

Which gas law to solve: A container is filled with H2, and H2O. What is the partial pressure of H2 when the pressure of water is 17 kPa. The total pressure of the gases is 750 kPa.

a)

P1V1 = P2V2

b)

Pt = P1 + P2 + P3 +...

c)

P1/T1 = P2/T2

d)

V1/n1 = V2/n2

5.

Which gas law to solve: A gas fills a balloon at a temperature of 27 oC and 1 atm of pressure. What will the pressure of the balloon be if the gas is heated to 127 oC?

a)

P1V1 = P2V2

b)

PV = nRT

c)

P1/T1 = P2/T2

d)

V1/T1 = V2/T2

6.

Which gas law to solve: A 220.0 mL sample of helium gas is in a cylinder at 105 kPa and 275 K. The piston is pushed in until the sample has a new temperature of 310 K and new pressure of 150 kPa. What is the new volume of the gas?

a)

P1V1/T1 = P2V2/T2

b)

PV = nRT

c)

P1V1 = P2V2

d)

Pt = P1 + P2 + P3 + ...

7.

Which gas law to solve: A container has 0.504 moles of a gas at a volume of 2680 mL. When the number of moles changes to 0.423 moles, what is the new volume?

a)

PV = nRT

b)

V1/n1 = V2/n2

c)

P1V1/T1 = P2V2/T2

d)

P1V1 = P2V2

8.

Boyle's Law shows the inverse relationship between between which two factors of a gas?

a)

volume and pressure

b)

temperature and pressure

c)

volume and temperature

d)

volume and moles

9.

Charles's law shows the direct relationship between which two factors of a gas ?

a)

volume and temperature

b)

volume and pressure

c)

pressure and temperature

d)

volume and moles

10.
Directly proportional means that as one value increases ....................
a)
the other stays the same 
b)
the other increases as well
c)
the other decereases
d)
the other goes to zero
11.
Inversely proportional means as one value increases the other............. 
a)
increases 
b)
decreases 
c)
stays the same 
d)
goes to zero
12.

Gay-Lussac's law shows the temperature and pressure of a gas are always ........

a)

inversely proportional

b)

directly proportional

13.
Charles's law shows that the temperature and volume of a gas are always........
a)
inversely proportional 
b)
directly proportional 
14.

Temperature describes the ______________ of particles.

a)

volume

b)

mass

c)

kinetic energy

d)

conductivity

15.
When a basketball is left outside in the cold it goes flat because the volume of air inside the ball has been reduced. What  gas law does this represent?
a)
Boyle's Law
b)
Charles's Law
16.
a)
this is a graph representing Boyle's law
b)
this is a graph representing Charles's law
17.
a)
This is an example of Charles's law
b)
This is an example of Boyle's law
18.
What will happen to the volume of a gas if the pressure increases, with constant temperature ?
a)
Increase
b)
Decrease
c)
Nothing
d)
Explosion!
19.

If you increase the temperature, what will happen to the pressure, if volume is constant?

a)

Increase

b)

Decrease

c)

Stay the same

d)

It will Blow Up

20.
If a balloon is cooled what will happen to the volume?
a)
Volume will increase
b)
Volume will decrease
c)
Volume will not change
21.
The energy of an object as it is in motion is defined as
a)
Kinetic Theory
b)
Kinetic energy
c)
Potential energy
d)
Electric energy
22.

The temperature at which all molecular motion stops is

a)

-460 .C

b)

-273K

c)

0K

d)

0.C

23.
When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the
a)
air molecules hit the walls of the tire less frequently
b)
rubber in the tires reacts with oxygen in the atmosphere
c)
air molecules speed up and collide with the tire walls more often
d)
air molecules diffuse rapidly through the walls of the tire.
24.
The random molecular motion of a substance is greatest when the substance is
a)
condensed
b)
frozen
c)
gas
d)
a liquid
25.
If you place a balloon in a freezer what happens to the size of the balloon?
a)
Doubles
b)
increases
c)
decreases
d)
stays still
26.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
27.
How do gas molecules move? 
a)
in an orderly fashion 
b)
constantly and randomly
c)
in straight line paths
d)
in a circular motion
28.
True or False: Gases can be compressed. 
a)
True
b)
False
29.
Which container will have a lower pressure?
a)
left
b)
right
c)
they both have the same pressure
d)
I don't know
30.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Pump in more gas
c)
Decrease the volume
d)
All of these
31.
In the ideal gas law, what does the variable n represent? 
a)
gas constant 
b)
moles 
c)
Temperature 
d)
Volume 
32.

Avogadro's Law explains the relationship between

a)

Pressure and Volume

b)

Pressure and Temperature

c)

Volume and Temperature

d)

Volume and Moles

33.

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

a)

The pressure will increase

b)

The pressure will decrease

c)

The pressure will remain constant

d)

The pressure will equalize

34.
Using the ideal gas law and the ideal gas constant what information do you need to determine the volume of the gas if you know the pressure and the temperature?  
a)
the molecular mass of the gas 
b)
the number of moles of the gas
c)
the density of the gas 
d)
the percentage composition of the gas 
35.
What variable should be placed in the blank to complete the following expression of the ideal gas equation:  PV = nR___?  
a)
boiling point of the gas in Kelvins 
b)
temperature of the gas in Celsius
c)
temperature of the gas in Kelvins 
d)
density of the gas in g/cm3
36.

Pressure is

a)

defined as the mass that an object exerts when at rest.

b)

not a measurable in gases.

c)

defined as the number of moles of substance divided by the mass of the substance.

d)

created by the force of the gas particles colliding with the walls of the container.

37.

Gases generally have

a)

low density

b)

high density

c)

closely packed particles

d)

do not have motion

38.
If the pressure in a balloon remains constant what happens to the balloon's volume as the temperature of the air increases?
a)
the balloon shrivels up
b)
balloon expands
c)
balloon stays the same size
d)
balloon shrinks
39.
Which of the following would increase the (gas) pressure of a system?
a)
Increase the Temperature
b)
Pump in more gas
c)
Decrease the volume
d)
All of these
40.

Which graph shows the pressure-temperature relationship expected for an ideal gas?

a)

1

b)

2

c)

3

d)

4

41.

Increasing the temperature of a gas with a volume held constant causes

a)

increased pressure

b)

decreased pressure

42.

Increasing the number of moles of a gas with the pressure and temperature held constant causes

a)

increased volume

b)

decreased volume

43.

Decreasing the volume of a gas with temperature held constant causes

a)

increased pressure

b)

decreased pressure

44.

Gay-Lussac's law shows the direct relationship between which two factors of a gas ?

a)

volume and temperature

b)

pressure and volume

c)

pressure and temperature

d)

volume and moles

45.

Avogadro's law shows the direct relationship between which two factors of a gas ?

a)

volume and temperature

b)

pressure and volume

c)

pressure and temperature

d)

volume and moles

46.

Boyle's law shows the volume and pressure of a gas are always ........

a)

inversely proportional

b)

directly proportional

47.

Avogadro's law shows the volume and moles of a gas are always ........

a)

inversely proportional

b)

directly proportional

48.

A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as

a)

real gas

b)

ideal gas

c)

imaginary gas

d)

perfect gas

49.

Which of the following is an assumption of the kinetic-molecular theory of gases?

a)

Collisions between gas particles are inelastic.

b)

Gases consist of closely spaced particles.

c)

Gas particles move around in an orderly manner.

d)

The average kinetic energy of a gas depends on the temperature of the gas particles.

50.

Which of the following is not a physical property of gases?

a)

absence of definite volume

b)

high density

c)

high compressibility

d)

diffusion

51.
What happen to the energy of the system when the molecules collide with each other?
a)
Energy increases
b)
Energy decreases
c)
Energy remains the same
52.
Gas molecules can easily be compressed  because ___________. 
a)
gas molecules are soft
b)
gas molecules are far apart
c)
gas molecules follow the shape of the container
53.
Diffusion is
a)
the ability of one gas to mix with another gas.
b)
the rate at which a gas flows through the air.
c)
an explosion of gases.
d)
the ability of a gas to move from a high pressure to a low pressure.
54.

Under which of the following conditions do gases behave like REAL gases?

a)

polarity; high pressure and low temperature

b)

polarity; high pressure and high temperature

c)

non-polarity; low pressure and low temperature

d)

non-polarity; low pressure and high temperature

55.

Collisions where no energy is lost are

a)

epileptic

b)

elastic

c)

erectic

d)

erratic

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