Abeka Physics Chapter 4
This set covers Abeka Physics Chapter 4: "The Gaseous State" (pages 49-67).
Terms in this set (40)
the most abundant gas in earth's atmosphere
term for the pressure created when air molecules hit each other and any surface exposed to them
term for the total absence of air or any other matter
term for gravity's pull on air molecules
True or False: Air has weight.
Gases and liquids are both ____-- that is, they both flow.
principle that states that the weight lost by an object suspended in a fluid equals the weight of the displaced fluid
principle that states that lateral pressure decreases as the rate of flow increases
term for any object with surfaces designed to create lift into the air
According to the principle of continuity, a fluid funneled into a _____ channel gains _____.
the ancient scientific principle that states that a vacuum is impossible to create because nature immediately fills any empty space with the nearest matter it can find
Greek philosopher who taught "horror vacui"
Is the principle of "horror vacui" true?
scientist credited with inventing the first barometer
preferred instrument that measures atmospheric pressure using mercury
Christian physicist and philosopher who discovered that there was a lower column of mercury in a barometer at a higher elevation
standard atmospheric pressure
term for the pressure that will support a mercury column exactly 460 mm tall at 0 degrees C
1.0 atm, 760 mm Hg, 760 torr
Give standard atmospheric pressure in atm, mm Hg, and torr, respectively.
pressure gauge that measures atmospheric pressure by comparing it to the pressure of a gas under investigation
term for the difference in height between the columns of an open-ended manometer
term for the pressure due only to a gas itself
Add or subtract the gauge pressure from the atmospheric pressure.
How can one find absolute pressure using the gauge pressure from a manometer?
instrument that measures atmospheric pressure without mercury and is widely used
type of relationship in which on quantity increases as another decreases
law that states that at a constant temperature the volume of a gas is inversely proportional to its pressure
P1V1 = P2V2
equation for Boyles's Law
absolute zero (0 K)
the lowest temperature at which matter can exist
term for temperature expressed in Kelvin
type of relationship in which one quantity increases and another increases by the same factor
law that states that at constant pressure, the volume of a gas is directly proportional to its absolute temperature
V1/T1 = V2/T2
formula for Charles's Law
P1V1/T1 = P2V2/T2
equation for the combined gas law
law that states that at a given temperature and pressure, two gases of the same volume have the same number of molecules
unit that represents approximately 6.022 x 10^23 molecules
letter that represents the universal gas constant
0.0821 L atm/K mole
the value of the universal gas constant (with units)
PV = nRT
formula for the ideal gas law
term for any device that transports air or that is driven by air pressure
Fluid that is caught up and carried along by a fluid stream nearby is said to be _____.
term for a simple device for transferring liquid from a higher container to a lower container
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