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Give reasons(a) A gas fills completely the vessel in which... - Science
Give reasons
(a) A gas fills completely the vessel in which it is kept.
(b) A gas exerts pressure on the walls of the container.
(c) A wooden table should be called a solid.
(d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.
(a) Because the force of attraction between the particles of a gas is negligible and they move randomly with high speed in all directions.
(b) Because the particles of gas move randomly and hit the walls of the container. These collisions exert a force on the walls, creating pressure.
(c) Because it has a definite shape, a definite volume, is rigid, and cannot be compressed.
(d) Because the particles in air have large spaces and very weak forces of attraction between them, while particles in a wooden block are tightly packed with very strong forces of attraction.