Which scientific principle is demonstrated by stating that gas pressure increases as temperature increases, assuming volume remains constant?

The principle that describes the relationship between gas pressure and temperature, assuming the volume of the gas remains constant, is known as Gay-Lussac's Law. This law states that the pressure of a gas is directly proportional to its temperature measured in Kelvin when the volume is unchanged. Hence, as the temperature of the gas increases, the kinetic energy of the gas molecules also increases, resulting in more frequent and forceful collisions with the walls of the container, leading to an increase in pressure.

Understanding this principle is key in various scientific applications, such as designing pressurized vessels and understanding weather patterns involving gases. Gay-Lussac's Law effectively captures this direct relationship and highlights the significance of temperature in influencing gas behavior under controlled conditions.