Kinetic theory of gases

What is kinetic energy associated with?

• The motion of an object.

• The color of an object.

• The temperature of an object.

• The shape of an object.

Define mean-free-path in a gas system.

• The mean-free-path in a gas system is the average distance a molecule travels between collisions.

• The mean-free-path is the maximum distance a gas molecule can travel in a vacuum.

• Mean-free-path refers to the time taken for a molecule to collide with another molecule.

• The mean-free-path is the total distance a gas molecule can travel without any external forces.

What does root-mean-square velocity represent?

• It represents the total energy of particles in a gas.

• It indicates the temperature of the gas particles.

• It represents the average velocity of particles in a gas.

• It measures the pressure exerted by gas particles.

Describe an ideal gas.

• An ideal gas is a gas that can be liquefied at room temperature and pressure.

• An ideal gas is a gas that exists only in solid form under extreme conditions.

• An ideal gas is a gas that has a high density and strong intermolecular forces.

• An ideal gas is a theoretical gas that perfectly follows the ideal gas law, with no intermolecular forces and negligible volume.

What is Brownian motion?

• The oscillation of particles in a solid due to temperature changes.

• The uniform motion of particles in a gas without any external forces.

• The predictable path of a particle in a vacuum.

• Brownian motion is the random movement of particles in a fluid due to molecular collisions.

Explain molecular collision.

• Molecular collision is the process of molecules separating from each other.

• Molecular collision is the interaction between molecules that can lead to chemical reactions.

• Molecular collision is the measurement of molecular weight.

• Molecular collision refers to the movement of molecules in a vacuum.

What is specific heat?

• Specific heat is the temperature at which a substance boils.

• Specific heat is the amount of heat lost when a substance cools down.

• Specific heat is the heat required to raise the temperature of a unit mass of a substance by one degree Celsius.

• Specific heat is the total energy contained in a substance.

What does degree of freedom refer to?

• The average of all values in a sample.

• The total number of data points in a dataset.

• The maximum value in a statistical analysis.

• The number of independent values in a statistical calculation.

How are pressure and volume related in gases?

• Pressure and volume are directly related in gases.

• Increasing volume increases pressure in gases.

• Pressure and volume are inversely related in gases.

• Pressure remains constant regardless of volume in gases.

What is thermal equilibrium?

• Thermal equilibrium occurs when bodies are at different temperatures and heat flows between them.

• Thermal equilibrium is the condition where one body is heated while the other cools down continuously.

• Thermal equilibrium is achieved when bodies are in motion relative to each other, causing heat transfer.

• Thermal equilibrium is the state in which two or more bodies in thermal contact have the same temperature, resulting in no net heat transfer between them.