AnswersFL-2003350-Chemistry 1 HonorsThe Ideal Gas Law

The Ideal Gas Law — Unit test Answers

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1
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Which proportionality shows the result of combining Avogadro’s law with Boyle’s law?

A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
2
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The volume of a gas decreases to half of its original volume, but the gas maintains the same number of moles and temperature. According to the ideal gas law, what will most likely happen to the pressure?

A
It will double.
B
It will decrease.
C
It will increase slightly.
D
It will remain the same.
3

Which sequence describes the result of increasing the temperature of a gas in a container?

A
higher kinetic energy ® greater collision force ® higher pressure
B
lower kinetic energy ® greater collision force ® higher pressure
C
higher kinetic energy ® lower collision force ® lower pressure
D
lower kinetic energy ® lower collision force ® lower pressure
4

Consider the temperature versus time graph below.At what temperature is the substance a heated gas?

Question illustration
A
at 100°C
B
below 0°C
C
above 100°C
D
between 0°C and 100°C
5

The diagrams show gases that are stored in two separate but similar containers.If both gases are at the same temperature, which one has the greater pressure?

Question illustration
A
gas 1 because the particles are moving much faster
B
gas 1 because it has fewer particles that are close together
C
gas 2 because it has more particles that are colliding
D
gas 2 because the particles have more space between them
6

What is the volume of 0.200 mol of an ideal gas at 200. kPa and 400. K?Use and .

Question illustration
A
0.83 L
B
3.33 L
C
5.60 L
D
20.8 L
7

The ideal gas constant, R has several different values that could be used. Which quantity causes these differences?

A
pressure
B
temperature
C
volume
D
moles
8

The diagrams show the particles of a substance.Which statement best describes the process that the diagrams show?

Question illustration
A
A solid loses kinetic energy to become a liquid and then becomes a gas.
B
A solid gains kinetic energy to become a liquid and then becomes a gas.
C
A gas loses kinetic energy to become a liquid and then becomes a solid.
D
A gas gains kinetic energy to become a liquid and then becomes a solid.
9

When the process of condensation occurs, the kinetic energy of particles

A
is insufficient to overcome intermolecular forces.
B
becomes independent of temperature.
C
becomes exactly equal to the intermolecular forces.
D
easily overcomes the intermolecular forces.
10

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another?

A
The volume and the shape stay the same.
B
The volume increases to fill the new container, but the shape stays the same.
C
The volume stays the same, but the shape changes to fit the new container.
D
The volume and the shape change to fill the new container.
11

Why does changing the volume of a container change the pressure of the gas in it?

A
Changing the volume reduces the number of molecules so they hit the walls of the container less often.
B
Changing the volume reduces the force with which the molecules hit the walls of the container.
C
Changing the volume increases the speed of the molecules so they hit the walls of the container more often.
D
Changing the volume increases the area that the molecules collide with so the force is spread over a larger area.
12

Which is an aspect of the kinetic-molecular theory and can be used to explain the compressibility of plasmas?

A
Particles move independently of one another and are widely spaced.
B
Particle kinetic energy increases with increasing temperature.
C
Particles exert no attractive or repulsive force on one another.
D
Particles always move even when they have fixed positions.
13

A gas has a temperature of 273.15 K and a pressure of 101.325 kPa. What can be concluded about the gas?

A
It has reached standard temperature and pressure.
B
The pressure needs to be increased to reach the standard pressure.
C
The temperature needs to be increased to reach the standard temperature.
D
Both the temperature and pressure need to be lowered to reach STP.
14

In the diagram below, particles of the substance are moving from the liquid phase to the gas phase at the same rate as they move from the gas phase to the liquid phase.The gas and liquid are at

Question illustration
A
equilibrium.
B
a high vapor pressure.
C
a low vapor pressure.
D
zero vapor pressure.
15

Why do amorphous solids not have a long-range order in the arrangement of their particles?

A
Their formation involves very rapid cooling.
B
They do not have enough particles.
C
Their particles eventually change positions.
D
Their particles always stay in the same positions.

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