Charles' Law

Three parameters used to describe the characteristics of gases are pressure, volume and temperature. The ideal gas laws describe the behavior of gases with respect to these parameters. Boyle’s Law describes the relationship between the volume and pressure of a gas when temperature is held constant. Charles' law describes the relationship between temperature and volume when pressure is held constant.

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Boyle's Law

On Earth, naturally occurring matter exists in one of three phases: solid, liquid or gas. Matter in each phase exhibits distinct characteristics. Gases, for example, do not have a fixed volume or shape. As a result, gases respond to pressure changes by changing their volume. In other words, gases are compressible. In contrast, liquids and solids are not compressible. Their volume does not change in response to changing pressure. This is the reason air filled spaces in our ears “pop” during airplane takeoff and landings while the liquid filled spaces in our bodies do not. Boyle's Law describes this relationship between gas pressure and volume.

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