The Kinetic-Molecular Theory: A Model for Gas Behavior
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Particle size. The volume of a gas molecule is negligible compared with the volume of the container. Gas particles act as points of mass
Particle motion. Gas molecules are in constant, random, straight- line motion, until they collide or hit the container walls.
-Between collisions, the molecules do not influence each other.
-Collisions are elastic; total kinetic energy (E k ) remains constant.
Particle speed, temperature, and energy. Molecules in a gas have a range of speeds (u), the most probable is near the average speed.
-As the temperature increases, the most probable speed increases.
Concept 5-8. How the postulates of the kinetic-molecular theory can explain the origin of pressure and the gas laws
Concept 5-9. The relations among molecular speed, average kinetic energy, andİtemperature
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