Which factors do gases depend on for their behavior?

The behavior of gases is fundamentally influenced by temperature, pressure, and volume, as described by the ideal gas law. This law relates these three properties and helps to predict how a gas will behave under different conditions.

Temperature affects the kinetic energy of gas molecules; as temperature increases, gas molecules move faster, leading to increased pressure if the volume is held constant. Conversely, if the volume of the gas changes, temperature and pressure also adjust accordingly.

Pressure is the force exerted by gas molecules colliding with the walls of their container and is directly related to the volume and temperature of the gas. According to Boyle's Law, for a given amount of gas at constant temperature, if the volume decreases, the pressure increases.

Volume is the space that the gas occupies. Changes in volume can lead to changes in pressure and temperature, following Charles's Law, which states that the volume of a gas is directly proportional to its temperature when pressure is held constant.

Together, these three factors are pivotal for understanding gas behavior in various scientific and engineering contexts. Other factors listed, such as mass, density, viscosity, and chemical composition, don't directly dictate the fundamental laws of gas behavior in the same way that temperature, pressure, and volume do.