Definition
Gay-Lussac's Law, also known as Amontons's law, describes the relationship between the pressure and temperature of a gas when volume and mass are held constant. As the temperature of a gas increases, its pressure increases proportionally. Conversely, if the temperature decreases, the pressure decreases. This law is essential in understanding and predicting the behavior of gases in various applications. It's a fundamental concept in thermodynamics and chemistry. Think of it like inflating a car tire: as the tire heats up from driving, the air pressure inside increases.