Note Taking Guide: Episode 901 and 902 – Flashcards
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Gases are composed of _____ ________ particles called molecules
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small, separate
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Gas molecules are in ________ ________.
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constant motion
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All ______collisions_____ between particles are ______ _________.
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perfectly elastic
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The _molecules________ of a gas display no ___________ or ____________ for one another.
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attraction or repulsion
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The average kinetic energy of the molecule is __________ __________ to the Kelvin temperature of the gas.
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directly proportional
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Ideal gas
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Gas whose behavior conforms to the kinetic theory.... (most real gases act ideal unless their pressure is too high or temp. too low)
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Formula for Pressure
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Force/Area
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Atmospheric Pressure
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The Pressure the earth's atmosphere exerts due to its weight.
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Barometer
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Instrument used to measure atmospheric pressure
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BAROMETER Invented by ______
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TORRICELLI
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Norm. Atmospheric Pressure is also called ___________ _________.
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Standard Pressure
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Normal atmospheric pressure in mmHg
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760 mm Hg
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Normal atmospheric pressure in Torr
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760 TORR
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Normal atmospheric pressure in atm
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1 atm
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Normal atmospheric pressure in kPa
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101.3 kPa
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STP
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Standard Temperature and Pressure
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STP IN ATM
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1 ATM
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STP IN C
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0 C
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Manometer
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instrument used to measure gas pressure
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(Manometer) U-shaped tube ___________ filled with __________.
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partially; Mercury
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(Manometer) One end _________ to _____________ and one to ______________.
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OPEN; confined gas; atmosphere
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Boyle's Law states that the __________ of a fixed mass of gas varies __________ with the _______ at constant temp.
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volume; inversely; pressure
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_________ of a gas is caused by the ______________ of the gas striking the walls of the container.
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Pressure; molecule
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If the gas is ______________ to _____ the volume it had, twice as many molecules are present in any given volume.
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compressed; half **twice as many impacts per second on the walls of the container **pressure will DOUBLE!
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Charles's Law: For a ________ _________ of gas, as long as the pressure is held constant, the volume varies -------- with the ----- ---------
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fixed mass; directly; kelvin temp.
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Ok=
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-273 C
