Pressure

Stuff about Pressure!

What is pressure?
Pressure is a "physical force exerted on or against an object by something in contact with it" (Google.com)


When talking about pressure, you might hear words such as:
Pascals- metric unit of pressure
               N/M2
Barometer- measures pressure
Atmospheric pressure- pressure of the air
Kinetic molecular theory-there are particles out in the air moving around
Dipole-




In colder degrees, molecules don't move as fast through the air. The barometer would then demonstrate that the atmospheric pressure is higher.




The equation to solve for what pressure there is is...
P total=P1 + P2 + ... + Pn (Pressure total l= Pressure 1 + Pressure 2 + ... + Pn)




"But what if the molecules in the air got 'sticky'?"
The molecules that are bouncing around tend to stick to things. The biggest change that will occur is boiling points.