Understanding Energy in Gas Molecules and the First Law of Thermodynamics

Which type of energy is NOT significant in a monatomic gas molecule?

• Internal energy

• Translational kinetic energy

• Rotational kinetic energy

• Vibrational energy

What is the term used to describe the total energy within a gas, including kinetic, rotational, and vibrational energies?

• External energy

• Potential energy

• Internal energy

• Thermal energy

How can heat be added to a gas in an enclosed container?

• By allowing particles to enter the container

• By submerging the container in a heat reservoir

• By increasing the pressure inside the container

• By expanding the volume of the container

What happens to the internal energy of a gas when work is done on it by compressing it with a piston?

• The internal energy remains constant

• The internal energy is converted to potential energy

• The internal energy increases

• The internal energy decreases

In the context of the first law of thermodynamics, what does a positive value of Q indicate?

• Work is being done by the gas

• Heat is being added to the gas

• Heat is leaving the gas

• The gas is losing energy

What is the first law of thermodynamics primarily concerned with?

• The conservation of momentum

• The conservation of energy

• The conservation of charge

• The conservation of mass

What was a historical misconception about heat before it was understood as a form of energy?

• Heat was thought to be a type of light

• Heat was considered a form of sound

• Heat was believed to be a fluid

• Heat was seen as a type of magnetism

If a gas does work on its surroundings by expanding, what happens to its internal energy?

• It becomes zero

• It decreases

• It remains the same

• It increases

What is the relationship between the work done on a gas and the work done by a gas?

• They are unrelated

• They are equal in magnitude but opposite in sign

• They are equal and negative

• They are equal and positive

What does the first law of thermodynamics imply about the nature of heat?

• Heat is a form of matter

• Heat is a form of energy

• Heat is a form of sound

• Heat is a form of light