In a container with a fixed amount of gas, what will happen to the volume as pressure increases?

In a container with a fixed amount of gas, if the pressure increases, the volume of the gas will decrease. This relationship is described by Boyle's Law, which states that for a given mass of gas at constant temperature, the pressure of the gas is inversely proportional to its volume. This means that as pressure goes up, the volume must decrease to maintain this inverse relationship, assuming the temperature remains constant.

If you visualize a gas in a piston, when pressure is applied to compress the gas, the volume decreases as the molecules are forced closer together. This behavior continues until either the gas reaches a state where it cannot be compressed any further or until the system reaches a new equilibrium at a different pressure and volume. Therefore, the correct understanding is that an increase in pressure leads to a decrease in volume for a fixed quantity of gas.