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Matter in Our Surroundings
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07/11/2021 4:50 pm
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(a) Why does a gas exert pressure?
(b) Why does a gas fill a vessel completely?
(c) Why are gases so easily compressible whereas it is almost impossible to compress a solid or a liquid?
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07/11/2021 4:51 pm
(a) When gas is stored in a container, the fast moving particles of the gas collides with each other thus exerts pressure on the walls of container.
(b) They have high kinetic energy and negligible force of attraction so it can move constantly moving with high speed in all directions.
(c) Gases are easily compressible as they have large inter-molecular spaces. The gas particles can come closer when external pressure is applied on gases.