# pressure of gases

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• Created by: aleena147
• Created on: 30-10-19 19:09
• pressure of gases
• colliding gas particles create pressure
• in a gas, particles move around in random directions
• as they move about, they randomly bang into each other and on the walls of the container
• when they collide with something they exert a force on it
• all these collisions cause a net force on the inside surface of the container
• the more particles there are in a given volume the more often they'll collide and the higher the pressure
• changing temperature changes pressure
• the pressure a gas exerts on a container depends on how fast the particles are moving and how often they hit walls
• if u heat the gas in a concealed container, energy is transferred to the KE store, the faster the particles move the more collisions and the higher the pressure
• if the particles are being cooled, particles have less energy and move slower which means less collisions and low pressure
• at constant temperature "pV=constant"
• if volume is decreased n its the same amount of gas pressure would increase
• if volume increased, collisions would be fewer and pressure would be lower
• for a fixed amount of gas at a constant temp,, leads to this equation
• pressure*volume=constant