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WorksheetsEMPIRICAL GAS LAWS
Total questions: 30
Worksheet time: 18mins
The pressure resulting from the collision of air molecules with objects is called
Kinetic energy
Vapour pressure
Atmospheric pressure
Sublimation
The pressure above a liquid in a sealed container caused by the collision of vaporized particles with the walls of their container is called
Kinetic energy
Atmospheric pressure
Vapour pressure
Sublimation
Which of the following statements does not agree with the kinetic theory of gases?
Gas particles move in predictable patterns.
Gas particles move independently of one another.
Gas particles are spaced far apart from each other.
Gas particles are in constant motion.
The average kinetic energy of the particles in a substance is
Increased as the temperature of the substance increases.
Unaffected by changes in the temperature of the substance.
Increased as the temperature of the substance decreases.
Equal to the total thermal energy absorbed by the substance.
What happens to the kinetic energy of the particles in a sample of gas as the temperature of the sample increases?
It increases, then decreases
It increases
It does not change
It decreases
Which of the following phase changes is NOT endothermic?
Condensation
Melting
Evaporation
Sublimation
The vaporization of a solid is also known as
Condensation
Evaporation
Deposition
Sublimation
The temperature at which the motion of particles theoretically ceases is
273 K
0 K
–273 K
0°C
Which of the following is NOT a characteristic of liquids?
Liquids have the ability to flow.
The particles of a liquid are not attracted to each other.
The particles of liquids are closer together than particles of gases.
Liquids conform to the shape of their container.
Which are the first particles to evaporate from a liquid?
Those with the lowest average kinetic energy.
Those with the highest average kinetic energy.
Those farthest from the surface of the liquid, regardless of kinetic energy.
Those closest to the surface of the liquid, regardless of kinetic energy.
Which of these statements best explains why a liquid’s rate of evaporation increases when the liquid is heated?
The potential energy of the liquid increases, which in turn increases the rate of evaporation.
The surface area of the liquid increases.
More surface molecules have the energy required to overcome the attractive forces holding them in the liquid.
The average kinetic energy of the liquid decreases.
If a liquid is sealed in an airtight container and kept at a constant temperature, how will its vapor pressure change over time?
It rises at first, then falls over time.
It rises at first, then remains constant.
It remains constant.
It rises continuously.
If a liquid is sealed in an airtight container, how will it be affected by an increase in temperature?
The kinetic energy of the liquid particles will decrease.
The atmospheric pressure above the liquid will increase.
The vapor pressure of the liquid will increase.
Fewer particles will escape the surface of the liquid.
In a dynamic equilibrium between the liquid state and the gaseous state, the rate of condensation
Is greater than the rate of evaporation.
Is less than the rate of evaporation.
Is equal to the rate of evaporation.
Has no effect on the rate of evaporation.
When gas particles escape from the surface of a liquid below the boiling point, this is called
Evaporation
Sublimation
Boiling
Condensation
When a liquid is at its normal boiling point, atmospheric pressure is
0 atm
1 atm
0.5 atm
2 atm
When the atmospheric pressure is equal to the vapor pressure of a liquid, the liquid will
Condense
Boil
Freeze
Melt
Which of the following characteristics is true of most solids?
Solids are viscous.
Solids are incompressible.
Solids generally melt easily.
Solids are made up of particles in rapid motion.
If you wanted to make water boil at 75ºC, instead of 100ºC, you would have to
Add more heat.
Increase air pressure.
Decrease the volume of water you are boiling.
Heat the water at a higher altitude.
Which of the following is not a phase change?
Melting
Sublimation
Evaporation
Diffusion
A device used to measure atmospheric pressure is called a
Manometer
Thermometer
Barometer
Millibar
Gas pressure is usually measured with an instrument called a
Manometer
Pascal
Barometer
Thermometer
Which scientist discovered that the pressure of the atmosphere changed according to altitude?
Huygens
Pascal
Avogadro
Torricelli
It is possible for equal volumes of gases, at standard pressure and temperature, to contain equal numbers of particles because
Gas particles are spaced far apart.
Gas particles are large in size.
The volume of a gas is inversely proportional to its mass.
This is not possible.
Equal volumes of nitrogen and oxygen, at the same temperature and pressure, would
Have the same mass.
Contain a different number of particles.
Contain the same number of particles.
Have different average kinetic energies.
Which of the following best describes Boyle’s Law??
The volume of a gas is directly proportional to its temperature if the pressure is kept constant.
The volume of a gas varies inversely with pressure, at a constant temperature.
The pressure of a gas is directly proportional to its temperature if the volume is kept constant.
At constant volume and temperature, the total pressure of a gas is equal to the sum of its partial pressures.
A weather balloon is heated from room temperature to 58ºC. As a result, the gas inside the weather balloon increases in volume. Which gas law explains this phenomenon?
Gay-Lussac’s Law
Charles’ Law
Boyle’s Law
Combined Gas Law
Why does the pressure inside a container of gas increase if more gas is added to the container?
There is an increase in the number of particles striking the wall of the container in the same period of time.
An increase in gas causes an increase in temperature, which then increases pressure.
As the volume of gas increases, the force of the collisions between particles and the container increases.
As the gas pressure increases, the volume of gas decreases.
A gas is confined to a steel tank with a fixed volume. At 293 K, the gas exerts a pressure of 8.53 atm. After heating the tank, the pressure of the gas increases to 10.4 atm. What is the temperature of the heated gas?
357 K
326 K
240 K
926 K
According to Gay-Lussac’s law
Pressure is inversely proportional to temperature at a constant volume.
volume is inversely proportional to temperature at a constant pressure.
Volume is directly proportional to temperature at a constant pressure.
Pressure is directly proportional to temperature at a constant volume.
