Ch.05.2045.F10.SS - CHAPTER 5 GASES Teresa Eckart Ph.D...

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1CHAPTER 5GASESTeresa Eckart, Ph.D.Office: BSF315Monday 2:00-3:00 Wednesday 2:15-3:15Thursday 4:30 -5:30
5.1 Putting Pressure to WorkDefine pressure and understand how a positive pressure or negative pressure (vacuum) can move a liquid.Understand how the pressure of the atmosphere is due to the constituent atoms and molecules.2
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Gases Pushinggas molecules are constantly in motionas they move and strike a surface, they push on that surfacepush = forceif we could measure the total amount of force exerted by gas molecules hitting the entire surface at any one instant, we would know the _________the gas is exerting4pressure = force per unit area
5.2 Pressure: The Result of Molecular CollisionsDefine and understand that a pressure is a force per unit area.The pressure of air can be detected and experienced by the senses--with the eardrums, by observing an airplane takeoff and land, and by watching the effects of wind. Define and know units of pressure—pascal, pounds per square inch (psi), torr, inches of mercury, and atmospheres.Know that a manometer is a device that measures pressure; blood pressure is the force that circulates blood.5
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The Pressure of a Gas7result of the constant movement of the gas molecules and their collisions with the surfaces around themthe pressure of a gas depends on several factors_________________ in a given volume_________ of the container____________ of the gas particles
Measuring Air Pressureuse a ___________column of mercury supported by air pressureforce of the air on the surface of the mercury balanced by the pull of gravity on the column of mercury8gravity
A high-performance bicycle tire has a pressure of 132 psi. What is the pressure in mmHg? 9

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