Chemistry Chapter 10 Notes Kinetic Theory 1. Gas is made up of tiny particles in constant motion. 2. Particles are far apart and moving independently. 3. Each particle has essentially no volume. 4. The collisions are perfectly elastic (total kinetic energy stays the same before and after the collision) Pressure- force exerted by the gas particles against the walls of container per unit area; depends on number of collisions and force of each, thus: Volume (decreased V= ^ pressure bc more collisions), Temperature (^T=^pressure bc more and stronger collisions)-atmospheric pressure at sea level is 101.3 kPa, and decreases as you go higher-barometer-specific type of manometer to measure atmospheric pressure; a barometer is a straight glass tube filled with mercury and closed at one end; placed in a dish of mercury; height of mercury in the tube depends on the pressure created by the air pressure pushing down on the surface of the mercury in the dish *760 mm Fg = 101.3 kPa = 1 atmosphere *7.501 mm Hg = 1 kPa
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