Which law describes the relationship between pressure and volume in gaseous substances?

Boyle's Law describes the relationship between the pressure and volume of a gas at constant temperature. According to this law, the pressure of a gas is inversely proportional to its volume when the temperature and the amount of gas are held constant. This means that if the volume of a gas decreases, the pressure increases, and vice versa.

Mathematically, Boyle's Law can be expressed as ( P \propto \frac{1}{V} ), or in formula form: ( PV = k ), where ( P ) is the pressure, ( V ) is the volume, and ( k ) is a constant for a given amount of gas at a fixed temperature.

This principle is fundamental in understanding how gases behave under different conditions and is critical in various applications such as in understanding breathing mechanisms, calculating gas exchanges, and in various engineering applications where gas behavior is important.

In contrast, the Law of Conservation of Energy relates to energy transformation rather than gas behavior, Avogadro's Law connects the volume of a gas to the number of moles of its particles, and Dalton's Law describes the behavior of mixtures of gases. Each of these laws applies to different aspects of gas behavior or thermodynamics, making Boyle's Law