Chem - I The Nature of Gases A Kinetic Theory 1 Kinetic...

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I) The Nature of Gases A) Kinetic Theory 1) Kinetic energy (a) Energy object has from motion 2) Kinetic Theory (a) Tiny particles in all forms of matter are in constant motion (1) Kinetic Theory Applied to Gases (i) No attractive or repulsive forces between particles (ii) Particles move rapidly in constant random motion (iii) All collisions are perfectly elastic B) Gas Pressure 1) Definition (a) Force exerted by a gas per unit surface area of an object 1) Vacuum (a) Empty space with no pressure and no particles 2) Atmospheric pressure (a) Collision of air molecules with objects (1) Increases as elevation decreases (2) Decreases as elevation increases (3) Dependent on weather (4) Measured by barometer (i) Older- mercury, Modern- metal diaphragm 3) Pascal (Pa) 1
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(a) SI unit of pressure 4) Standard conditions (a) Temperature (1) Zero degrees Celsius (b) Pressure (1) 101.3 kPa or 1 atm C) Kinetic Energy and Kelvin Temperature 5) Potential Energy (a) Stored energy (b) Does not raise temperature of a substance 6) Absorbed Energy (a) Speeds up the particles (1) Increases kinetic energy (i) Increases temperature 7) Average kinetic energy (a) Discussing kinetic energy of a collection of particles
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Chem - I The Nature of Gases A Kinetic Theory 1 Kinetic...

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