Kinetic Molecular theory (KMT)
an attempt to explain gas behavior based upon the motion of molecules
How many assumptions of the KMT are there?
6
What are the 6 KMT assumptions?
1. all gases are made of atoms or molecules
2. gas particles are in constant rapid motion
3. the temperature of a gas is proportional to the average kinetic energy of the particles
4. gas particles are not attracted nor repelled from one another
5. all ga
Effusion
gas escapes from a tiny hole in the container
diffusion
gas moves across space
(perfume)
what happens to diffusion and effusion as mass of the particles increases
the rate of effusion and diffusion is lowered
Expansion
the ability to fill any container in which it is enclosed
fluidity
the ability to move over or around an object
compressability
ability to reduce the size(volume) of a container holding a fixed quantity of gas
density
mass per unit volume
pressure
the force of gas particles running into a surface
atmospheric pressure
pressure due to the layers of air in the atmosphere
what happens to pressure as the number of molecules increase?
the pressure increases
What happen to pressure as volume increases?
pressure decreases
what does Boyles Law calculate
Calculates changes in pressure and volume
What is boyles Law
given a fixed quantity of a gas(#particles) and a constant temperature the volume and pressure are inversly proportional
inversely proportional
as one goes up the other goes down
Equation for Boyles law
P1V1=P2V2
temperature
the average kinetic energy of molecules
what happens to pressure as temperature increases?
pressure increases
what does Charles Law calculate
changes in temperature and volume
What does Charles law say?
given a fixed quantity of gas (#number of particles) and a consatnt pressure the volume and temperature are directly proportional as one goes up the other goes up, as one goes down the other goes down
Equation for Charles law
V1=V2
T1 T2
What typeof measurement does temperature have to be in?
Kelvin
Gay Lussacs law calculates?
changes in temperature and pressure
what does Gay Lussacs law say?
if theres a constant volume and a fixed quantity of gas then the pressure and temperature are directly proportional
Equation for Gay Lussacs Law
P1=P2
T1 T2
directly proportional
as one goes up the other goes up, as one goes down the other goes down
combined gas law
P1V1=P2V2
T1 T2