Boyle's Law indicates that if the volume of a gas is decreased, what happens to the pressure?

Boyle's Law states that the pressure of a given mass of gas is inversely proportional to its volume when temperature is held constant. This relationship can be expressed mathematically as ( P \times V = k ), where ( P ) represents pressure, ( V ) represents volume, and ( k ) is a constant for a specific amount of gas at a constant temperature.

When the volume of a gas decreases, the gas molecules are forced closer together, which leads to more frequent collisions of the gas molecules with the walls of the container. These increased collisions result in an increase in pressure. Therefore, when the volume is reduced, according to Boyle's Law, the pressure must increase to maintain that constant relationship. This is why the answer indicating that pressure increases when volume decreases is correct.

The other choices do not align with Boyle's Law; the pressure does not remain the same, decrease, or fluctuate when volume decreases under constant temperature conditions.