Final answer:
The volume of a gas particle decreases as its temperature is lowered to -273°C, which is consistent with Charles's Law, but in practice gases condense into a liquid before reaching this temperature.
Step-by-step explanation:
If the temperature of a gas particle is lowered to -273°C, which is equivalent to absolute zero, the volume of the gas particle decreases. This is consistent with Charles's Law, which states that the volume of an ideal gas is directly proportional to its absolute temperature when pressure is held constant. Hence, as the temperature approaches absolute zero, the volume of the gas also approaches zero. However, in practice, before reaching -273°C, gas particles would condense into a liquid state, with the volume decreasing precipitously at the liquefaction point.
Therefore, the correct answer to the question is B. It decreases. It's important to remember that gases exhibit ideal behavior only under certain conditions, and real gases will deviate from this behavior as they approach the temperature of liquefaction.