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States of Matter

States of Matter

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States of Matter

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  1. States of Matter Kinetic Molecular Theory

  2. States of Matter Changes in State There are three Solid Liquid Gas Also called change of phase Temperature dictates changes States of Matter

  3. Solid  liquid Better known as Melting Temp. increasing Liquid to gas B.K.A. Boiling Temp. increasing Gas to Liquid B.K.A. Condensation Temp. Decreasing Liquid to solid B.K.A. Freezing Temp. Decreasing

  4. Kinetic Theory Describes the action of individual atoms and particles This is called kinetic motion States the following Particles are always in motion Have insignificant volume Gases always move randomly and in a straight line Only change direction when they collide with something fill their containers Kinetic Molecular Theory

  5. Air Pressure Gas Particles exert force when they collide with their containers. The sum total of the billions and billions of collisions = air pressure More Particles in a container = high pressure Little Number of Particles in a container = low pressure

  6. Vacuum Gravity and Atmospheric Pressure Empty space with no gas particles and no pressure Gravity pulls gas particles down toward the ground This causes Atmospheric Pressure Increases the closer to Earth Decreases the higher the altitude

  7. Temperature and Kinetic Energy Kinetic Energy = amount of particle speed Particles move faster at higher temperatures Higher speeds = more collisions = more pressure

  8. Barometer Tool used to measure atmospheric pressure

  9. Units of Pressure Atmospheres = atm Millimeters of mercury = mm Hg Kilopascals = kPa Pounds per square inch = psi Pressure Equivalences 1 atm = 760 mm Hg = 101.3 kPa = 14.7 psi