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Chemistry Gases Test Chapter 14
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Gravity
Key Concepts:
Terms in this set (31)
Compressibility
a measure of how much the volume of matter decreases under pressure
True or False: Gases are easily compressed because of the space between the particles in gas?
True
What are the three factors that affect gas pressure.
The amount of gas, volume, and temperature
If the temperature is constant, and the pressure of a gas increases, the volume _____ ?
decreases
This law states that for a given mass of gas at constant temperature, the volume of the gas varies inversely with pressure.
Boyle's Law
P1•V1=P2•V2
Boyles Law
Boyle's Law deals with _____ and _____
pressure and volume
True or False? As the temperature of an enclosed gas increases, the volume increases, if the pressure is constant.
True
the law that states that for a fixed amount of gas at a constant pressure, the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases
Charles's Law
V1/T1=V2/T2
Charles's Law
Charles's Law deals with ____ and ____
Temperature and Volume
As the temperature of an enclosed gas increases, the pressure _____, if the volume is constant.
increases
the law that states that the pressure of a gas at a constant volume is directly proportional to the absolute temperature
Gay-Lussac's Law
P1/T1=P2/T2
Gay-Lussac's Law
Gay-Lussac's Law deals with _____ and _____
Pressure and Temperature
What law describes the relationship between the pressure, volume, and temperature of a fixed amount of gas ?
combined gas law
True or False? The combined gas law allows you to do calculations for situations in which only the amount of gas is constant
True
P1V1/T1=P2V2/T2
combined gas law
To calculate the number of moles of a contained gas requires an _______ that contains the variable n
expression
law that states the math relationship of pressure (P), volume (V), temperature (T), the gas constant (R), and the number of moles of a gas (n); PV=nRT.
Ideal Gas Law
the constant in the ideal gas law with the symbol R and the value is 8.31 (L
kPa)/(K
mol)
ideal gas constant
P•V=n•R•T or PV=nRT
Ideal Gas Law
Real gasses differ most from idea gases at ____ temperatures and ____ pressures.
Low; High
the contribution each gas in a mixture of gases makes to the total pressure
Partial Pressure
True or False? In a mixture of gases, the total pressure is the sum of the partial pressures of the gasses.
True
States that the total pressure exerted by a gaseous mixture is equal to the sum of the partial pressures in each individual component in a gas mixture.
Dalton's Law
P total=P1+P2+P3...
Dalton's Law
process by which molecules tend to move from an area where they are more concentrated to an area where they are less concentrated
Diffusion
a process by which gas particles pass through a tiny opening
effusion
the law that states that the rate of effusion of a gas is inversely proportional to the square root of the gas's density
Grahams Law of effusion
RateA/RateB=√Mb/√Ma
Grahams Law
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