What does Boyle's Law state about gas volume and applied pressure?

Boyle's Law describes the relationship between the pressure and volume of a gas at constant temperature. It states that the volume of a given mass of gas is inversely proportional to the pressure exerted on it when temperature is held constant. This means that as the pressure on a gas increases, the volume of the gas decreases, and vice versa. If you were to think about a syringe: when you push the plunger, you increase the pressure on the gas inside, which consequently reduces its volume.

This inverse relationship illustrates that if the pressure doubles, the volume will be halved, assuming no change in temperature. Therefore, the correct answer effectively encapsulates this principle of Boyle's Law, highlighting how changes in pressure fundamentally affect the space occupied by the gas.