Chemistry Chapters 13 and 14 (Practice Quiz)

What happens to the temperature of a gas when it is compressed?

The temperature increases.

The temperature does not change.

The temperature decreases.

The temperature becomes unpredictable.

Question 6

1 / 1 pts

As the temperature of the gas in a balloon decreases, which of the following occurs?

The volume of the balloon increases.

The average kinetic energy of the gas decreases.

The gas pressure inside the balloon increases.

The density of the balloon decreases.

Question 7

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If 4 moles of gas are added to a container that already holds 1 mole of gas, how will the pressure change inside the container?

The pressure will be five times higher.

The pressure will double.

The pressure will be four times higher.

The pressure will not change.

Question 8

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The volume of a gas is doubled while the temperature is held constant. How does the gas pressure change?

It is reduced by one half.

It does not change.

It is doubled.

It varies depending on the type of gas.

Question 9

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The volume of a gas is reduced from 4.0 L to 0.5 L while the temperature is held constant. How does the gas pressure change?

It increases by a factor of four.

It decreases by a factor of eight.

It increases by a factor of eight.

It increases by a factor of two.

Question 10

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If a balloon is heated, what happens to the volume of the air in the balloon if the pressure is constant?

It increases.

It stays the same.

It decreases.

The change cannot be predicted.

Question 11

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When the pressure and number of particles of a gas are constant, which of the following is also constant?

the sum of the volume and temperature in kelvins

the difference of the volume and temperature in kelvins

the product of the volume and temperature in kelvins

the ratio of the volume and temperature in kelvins

Question 12

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If a balloon is heated, what happens to the pressure of the air inside the balloon if the volume remains constant?

It increases.

It stays the same.

It decreases.

The change cannot be predicted.

Question 13

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When the volume and number of particles of a gas are constant, which of the following is also constant?

the sum of the pressure and temperature in kelvins

the difference of the pressure and temperature in kelvins

the product of the pressure and temperature in kelvins

the ratio of the pressure and temperature in kelvins

Question 14

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As the temperature of a fixed volume of a gas increases, the pressure will ____.

vary inversely

decrease

not change

increase

Question 15

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If a sealed syringe is plunged into cold water, in which direction will the syringe piston slide?

in

out

No movement will occur.

The direction cannot be predicted.

Question 16

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A gas occupies a volume of 2.4 L at 14.1 kPa. What volume will the gas occupy at 84.6 kPa?

497 L

2.5 L

14 L

0.40 L

Question 17

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If a sealed syringe is heated, in which direction will the syringe plunger  move?

out

in

The plunger will not move.

The direction cannot be predicted.

Question 18

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In general, for a gas at a constant volume, the

pressure of the gas is inversely proportional to its temperature in kelvins.

volume of the gas is inversely proportional to its temperature in kelvins.

volume of the gas is directly proportional to its temperature in kelvins.

pressure of the gas is directly proportional to its temperature in kelvins.

Question 19

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The combined gas law relates which of the following?

pressure and volume only

temperature and pressure only

volume and temperature only

temperature, pressure, and volume

Question 20

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What does the ideal gas law allow a scientist to calculate that the other gas laws do not?

number of moles

pressure

volume

temperature

Question 21

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Which law can be used to calculate the number of moles of a contained gas?

Boyle’s law

combined gas law

ideal gas law

Charles’s law

Question 22

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At high pressures, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions?

It is much greater.

It is much less.

There is no difference.

It depends on the type of gas.

Question 23

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At low temperatures and pressures, how does the volume of a real gas compare with the volume of an ideal gas under the same conditions?

It is greater.

It is less.

There is no difference.

It depends on the type of gas.

Question 24

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Which of the following can occur with a real gas but not with an ideal gas?

condensation

cooling

heating

compression

Question 25

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Under what conditions of temperature and pressure is the behavior of real gases most like that of ideal gases?

low temperature and low pressure

low temperature and high pressure

high temperature and low pressure

high temperature and high pressure

Question 26

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If the atmospheric pressure on Mt. Everest is one-third the atmospheric pressure at sea level, the partial pressure of oxygen on Everest is ____.

one-sixth its pressure at sea level

one-third its pressure at sea level

one-half its pressure at sea level

equal to its pressure at sea level

Question 27

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What happens to the partial pressure of oxygen in a sample of air if the temperature is increased?

It increases.

It stays the same.

It decreases.

The change cannot be determined.

Question 28

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If oxygen is removed from a sample of air as iron rusts, what happens to the partial pressure of oxygen in the air?

It increases.

It stays the same.

It decreases.

The change cannot be determined.

Question 29

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If oxygen is removed from a sample of air as iron rusts, what happens to the total pressure of the air?

It increases.

It stays the same.

It decreases.

The change cannot be determined.

Question 30

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Which of the following gases will effuse the most rapidly?

bromine

chlorine

ammonia

hydrogen

Question 31

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Which of the following molecules would have the greatest velocity if each atom had the same kinetic energy?

bromine

chlorine

ammonia

hydrogen

Question 32

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What is one standard atmosphere of pressure in kilopascals?

0 kPa

760 kPa

101.3 kPa

1 kPa

Question 33

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The temperature at which the motion of particles theoretically ceases is ____.

–273 K

0 K

0

C

273

C

Question 34

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Compared to the melting points of ionic compounds, the melting points of molecular solids tend to be ____.

similar

unpredictable

lower

higher

Question 35

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Most solids

are dense and difficult to compress.

are able to flow.

are amorphous.

have a disorderly structure.