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Characteristics of Gases
Pressure
Gas Laws
Kinetic Molecular Theory
Molecular Effusion and Diffusion
100
A complex mixture of several substances, either atomic in nature or consisting of small molecules.
What is air?
100
The idea of a force, a push that tends to move something in a given direction.
What is pressure?
100
Four variables needed to define the physical state of a gas.
What is temperature, pressure, volume, and the amount of gas?
100
A set of assumptions about the nature of gases. They also yield the ideal gas equation.
What is the kinetic-molecular theory?
100
1/2mu^2
What is the average kinetic energy of any collection of gas molecules?
200
He, Ne, Ar, Kr, and Xe
What are monatomic gases?
200
The equation for pressure.
What is P=F/A
200
Investigated the relationship between the pressure of gas and its volume.
Who is Robert Boyle?
200
PV=nRT
What is the ideal-gas equation?
200
The escape of gas molecules through a tiny hole into an evacuated space.
What is effusion?
300
Substances that are liquids or solids under ordinary conditions, that can also exist in a gaseous state.
What are vapors?
300
All experience an attractive force that pulls toward the center of the Earth
What is you and I, coconuts and nitrogen molecules?
300
The volume of a fixed quantity of gas maintained at constant temperature is inversely proportional to the pressure.
What is Boyle's Law?
300
Speed of a molecule possessing average kinetic energy.
What is the root-mean-square speed?
300
Discovered that the effusion rate of a gas is inversely proportional to the square root of its molar mass.
Who is Thomas Graham?
400
The type of mixtures that gases form.
What is homogeneous?
400
The SI unit for force
What is a newton?
400
When we apply Boyle's Law.
What is every time we breath?
400
The pressure exerted by gas is caused by collision of the gas molecule with the walls of their container.
What is the molecular origin of gas pressure?
400
The mean free path.
What is the average distance traveled by a molecule between collisions?
500
The amount of space individual molecules in a liquid occupy.
What is 70% of the total space?
500
Inventor of the barometer
Who is Evangelista Torricelli?
500
The laws of combining volumes.
What is at a given pressure and temperature, the volumes of gases that react with one another that are in the ratios of small whole numbers?
500
The two applications to the gas laws.
What is the effect of volume increase at constant temperature and the effect of a temperature increase at constant volume?
500
(P+n^2 a/V^2)(V-nb)=nRT
What is Van der Waals equation?