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The pressure
its gas pressure
As the molecules in the gas move, they collide with the container they are within. These collisions is what we call pressure.
atmospheric pressure
Pressure is the effect of collisions with molecules. KMT -- molecules have kinetic energy due to their temperature which imparts more velocity, hence kinetic energy, to the molecules. All gases have KE due to temperature. IF absolute zero was ever achieved there would be no kinetic energy in the molecules, no molecular motion, no collisions, no pressure.
The molecules of the gas are in constant motion and their collisions with the sides of the container exerts a force which is felt as pressure.
No, pressure is the result of molecular collisions by gas molecules on the walls of a container. The gas laws are merely ways of mathematically quantifying those collisions etc.
The great the density the higher the air pessure.
By the movement of the atoms/molecules.
Warmer molecules have more energy, and therefore move faster. Gas molecules will collide with solid objects, these collisions are what cause gas to have a pressure in the first place. Faster molecules mean more energetic collisions, hence a higher pressure on their surroundings. In the case of a sealed vessel, that means that when the temperature rises high enough, the molecules collide with it with enough force to rupture the vessel and burst it open.
So that the electrons are not scattered by collisions with air molecules.
The pressure produced by a vapor (gas) is a result of the collisions of the gas molecules with the sides of the container.