According to Boyle's Law, what relationship exists between the pressure and volume of a gas at constant temperature?

Boyle's Law describes the relationship between pressure and volume of a gas when temperature remains constant. It states that as the volume of a gas decreases, the pressure increases, provided that the temperature does not change. This foundational principle of gas behavior reflects that pressure and volume are inversely related; when one increases, the other decreases.

In terms of mathematical expression, Boyle's Law can be represented as P1V1 = P2V2, where P represents pressure and V represents volume. This equation illustrates that if the volume goes down (for example, through compression), the pressure must increase to keep the equation balanced, demonstrating this inverse relationship.

Understanding this relationship is crucial in various fields, including medicine and emergency services, where gas behavior is pertinent in respiratory physiology and the operation of medical devices.