Chapter 4 - Introduction to Gases Chapter 4 Properties of...

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Introduction to Gases Chapter 4
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Properties of Gases Gases may be compressed Gases expand to fill the container uniformly All gases have low density Gases may be mixed A confined gas exerts a constant pressure on all sides of the container
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The Kinetic Theory of Gases and the Ideal Gas Model Kinetic Theory: All matter consists of particles that are in constant motion Ideal Gas Model is used to visualize particles that cannot actually be seen
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Feature of the Ideal Gas Model Gases consist of particles moving in straight lines Purely elastic collisions Particles are far apart Actual volume of particles is negligible No attractive forces between particles
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Measuring Pressure Atmospheric pressure was first measured by Torricelli who made the first barometer He recognized that the level of mercury in the tube varied from day to day Suggested the barometer was actually measuring the weight of the air or atmosphere on the barometer
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Pressure Force exerted on a unit area Pressure = force/area or P = F/A
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Pascal Took the barometer made by Torricelli and
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This note was uploaded on 04/18/2008 for the course CHM 109 taught by Professor Staff during the Fall '08 term at Grand Valley State University.

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Chapter 4 - Introduction to Gases Chapter 4 Properties of...

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