What does Boyle's Law state?

Boyle's Law states that the pressure of a gas is inversely proportional to its volume when the temperature and the number of moles of gas remain constant. This means that as the volume of a gas decreases, the pressure increases, provided the temperature does not change. This relationship can be mathematically represented by the equation P1V1 = P2V2, where P represents pressure and V represents volume.

This concept can be visualized using a piston. If you push the piston inward (decreasing the volume), the gas molecules are forced closer together, which increases the frequency of collisions between the molecules and the walls of the container, leading to higher pressure.

Understanding this law is essential in various applications, including breathing mechanics in biological systems and the principles behind syringes and gas laws in chemistry. The other options presented do not accurately capture the relationship described by Boyle's Law.