What does Boyle's law describe?

Boyle's law describes the relationship between pressure and volume of a gas at constant temperature. It states that if the temperature of a gas remains constant, increasing the volume of a gas results in a decrease in its pressure, and conversely, decreasing the volume raises the pressure. This relationship is mathematically expressed as P1V1 = P2V2, where P represents pressure and V represents volume.

In the context of gas behavior, this law highlights the inverse relationship between pressure and volume, which is essential for understanding how gases behave under varying conditions. For example, if you squeeze a balloon, you decrease its volume and observe an increase in internal pressure.

Other choices refer to different relationships in gas laws or mechanics. The relationship between temperature and pressure describes Gay-Lussac's law. The relationship between mass and acceleration is outlined in Newton's second law of motion. The relationship between volume and temperature relates to Charles's law, which states that volume is directly proportional to temperature at constant pressure.