# Gas Laws: Calculating Pressure Changes

The gas laws are fundamental principles that govern the behavior of gases under different conditions. Boyle's Law states that the pressure of a gas is inversely proportional to its volume when temperature is held constant. In other words, as the volume of a gas sample increases, the pressure decreases, and vice versa.

Charles's Law, on the other hand, states that the volume of a gas is directly proportional to its temperature in Kelvin when pressure is constant. This means that as the temperature of a gas sample increases, its volume also increases, and if the temperature decreases, the volume decreases.

When we combine Boyle's Law and Charles's Law into the Ideal Gas Law (PV = nRT), we can calculate the final pressure, volume, or temperature of a gas sample when one or more of these variables change. By manipulating the Ideal Gas Law equation, we can determine the new pressure of a gas sample given changes in volume and temperature.

Overall, understanding the gas laws and how they interact with each other allows us to predict and explain the behavior of gases in various situations, such as changes in volume, temperature, and pressure. It provides a framework for studying gas properties and performing calculations that are essential in chemistry and other scientific fields.