Volume and pressure have what type of relationship?

Volume and pressure have an inverse relationship, which is described by Boyle's Law. This law states that at a constant temperature, the pressure of a gas is inversely proportional to its volume. When the volume of a gas increases, the space available for the gas molecules to move around increases, leading to a decrease in the frequency of collisions between the gas molecules and the walls of the container. This results in a decrease in pressure. Conversely, if the volume decreases, the gas molecules are compressed, increasing the frequency of collisions and thereby increasing the pressure.

This relationship highlights the fundamental behavior of gases under varying conditions. As one quantity changes, the other must change in the opposite direction to maintain equilibrium, assuming temperature remains constant.