AnswersFL-2003350-Chemistry 1 HonorsThe Ideal Gas Law

The Ideal Gas Law — Test Answers

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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.
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 best characterizes a crystal?

A
a number of high speed particles moving randomly
B
a dense substance that is hard and incompressible
C
a high-energy state of matter made up of a swirling, ionized gas
D
a loose association of particles moving past one another
4

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.
5

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.
6

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.
7

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
8

Which statement describes a limitation of the kinetic-molecular theory for a gas?

A
The theory assumes that particles do not experience intermolecular forces.
B
The theory states that pressure is inversely proportional to volume.
C
The theory assumes that particles are in random and continuous motion.
D
The theory states that pressure increases with temperature.
9

Which law is described by saying that when the pressure of a gas in a sealed container is cut in half, the gas will double in volume at a steady temperature?

A
Boyle’s law
B
Charles’s law
C
Dalton’s law
D
Gay-Lussac’s law
10

Shana solves stoichiometry problems using the equation for the synthesis of water.Which interpretation of the balanced equation would cause Shana to make a mistake?

Question illustration
A
Two moles of hydrogen react with one mole of oxygen to form two moles of water.
B
Two grams of hydrogen react with one gram of oxygen to form two grams of water.
C
Two molecules of hydrogen react with one molecule of oxygen to form two molecules of water.
D
Two liters of hydrogen react with one liter of oxygen to form two liters of water.
11

The diagram below shows the different phase transitions that occur in matter.Which best describes the process that arrow 1 represents?

Question illustration
A
Molecules are speeding up during boiling.
B
Molecules are depositing as ice on a surface.
C
Molecules are slowing down during condensing.
D
Molecules are moving from stationary positions.
12

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.
13

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
14

Which commercial technology commonly uses plasmas?

A
a radio
B
a race car
C
a television
D
a microwave oven
15

A gaseous substance turns directly into a solid. Which term describes this change?

A
deposition
B
evaporation
C
melting
D
sublimation

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