## Gas Laws Notes

Gas Laws Properties of Gases Fluids Low density Highly compressible Completely fill a container and exert pressure in all directions Pressure the force exerted per unit of area Units of pressure: kilopascal (kPa) atmosphere (atm) torr (torr) millimeters of mercury (mmHg) pounds per square inch (psi) 1 atm = 760 mm Hg = 760 torr = 101 kPa Pressure and Volume How are pressure and volume of a gas related? Think about the demos yesterday. What are the words we use for this relationship? What would a graph look like? Pressure and Volume Boyle?s Law: the volume of a certain mass of gas at constant temperature is inversely proportional to the pressure applied to the gas P1V1 = P2V2 P V