What aspect of gases is commonly affected at temperatures approaching absolute zero?

At temperatures approaching absolute zero, the behavior of gases is markedly influenced by the principles of kinetic theory and thermodynamics. As the temperature decreases, the average kinetic energy of the gas molecules also decreases, resulting in reduced molecular motion. This means that the molecules move slower and are less energetic, leading to a significant reduction in any form of motion they exhibit.

In essence, at absolute zero (0 Kelvin or -273.15°C), all classical motion of particles theoretically stops, and the gas would transition into a state where it exhibits quantum mechanical properties. This is why the answer focuses specifically on the decrease in molecular motion, as it is a fundamental characteristic of gases at extremely low temperatures.

Understanding the behavior of gases under these conditions is crucial, especially in fields such as cryogenics and physics, where the effects of temperature on molecular motion can lead to significant changes in the properties and behavior of gases.