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Once upon a time gases were discovered in 

the wonderful world of chemistry.. gases 

were established as ideal, which means they 

follow the 5 assumptions of something we 

call the kinetic molecular theory and they 

go like this..

*Gas particles (mini gases) dont attract or 

repel from one another.

*Gas particles are miniature compared to the 

distance between them 

*Gas particles are like little children, they are 

always in constant random motion.

*No kinetic energy is lost when particles 

collide with each other.

*All gases have same kinetic energy at a 

given temperature.

When gases are heated kinetic energy 

increases, driving the particles crazy! When 

this happens the particles push harder against 

their surroundings, imagine a bunch of high 

speed bouncy balls trapped in a small space, 

that's how gas particles would react when 

exposed to heat!

If the container in which the gases are in is 

able to expand, the volume of the gases will in 

fact increase! like a rubber balloon being 

inflated. 

But if the container can't expand, pressure will 

increase.

Avogadros Law or Avocados law           states 

that two different gases of equal           volume 

or size, at the same pressure and temperature 

will have equal numbers molecules, moles and 

particles regardless of the type of gas it may 

be.                           

                                        =    SAME 

(molecules, moles and particles)                                                                      

Dalton's law states that in any mixture of 

gases, the total pressure exerted by the 

mixture itself is equal to the sum of the partial 

pressure of gas. Here is the formula to 

illustrate the law easier: 

Ptotal=Pgas1+Pgas2+Pgas3 

              =           +      + 

There are 4 variables to the equation, to fully 

learn the process we must memorize these:

1.Pressure (P)

2.Temperature (T)

3.Volume (V)

4.Number of moles (n)

There are many formulas that lead to figuring 

out information about the gases.

The Combined Gas Law is one of them.. It 

states the relationship among pressure, 

volume, and temperature of a gas under 2 sets 

of conditions. To us this formula, you must 

have all 6 variables, although if given 5, you 

can easily work out the 6th one with the use of 

a little math.

P1V1/T1=P2V2/T2

In Boyle's Law, or boils law, haha get it? The 

temperature (T) is held constant. So there is 

no need to include the temperature into the 

equation.. Boyle's Law goes something like 

this: P1V1=P2V2

Also, as pressure increases, volume decreases 

and as pressure decreases, volume increases. 

these two have what we call an inverse 

relationship with each other. 

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