According to the kinetic molecular theory, which property is the same for all gas particles at a given temperature?

• A. Average kinetic energy
• B. Mass
• C. Velocity
• D. Volume

Answer: (A)

Verified step by step guidance

1. Recall the kinetic molecular theory, which describes the behavior of gas particles in terms of their motion and energy.
2. Understand that temperature is directly related to the average kinetic energy of gas particles, meaning at a given temperature, all gases have the same average kinetic energy regardless of their mass or type.
3. Recognize that mass and velocity vary between different gas particles, so these properties are not the same for all gases at a given temperature.
4. Note that volume is a property of the gas sample as a whole, not an individual particle, and can change with pressure and temperature.
5. Conclude that the property that remains the same for all gas particles at a given temperature is their average kinetic energy.