Subject :Chemistry Class : Class 9
The molecules of a gas are free to move about in any direction. Because of large intermolecular spaces, the gases are easily compressible. The kinetic energy of the molecules of gases is maximum and they move about randomly at a high speed. The randomly moving high speed molecules hit against the sides of containing vessel. The pressure exerted by any gas is due to the force exerted by its molecules on the sides of containing vessel.
The force per unit area exerted by the particles of the gas on the walls of container is called
A atmospheric pressure
B pressure of the gas
C kinetic energy of the gas
D density of the gas.
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Class : >Class 9
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