3. 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.
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Answered by
8
Answer:
hiiii dude
- The force of attraction between particles of gas is negligible. Because of this, particles of gas move in all directions. Thus, a gas fills the vessel completely in which it is kept. ... Because of this a gas exerts pressure on the walls of the container in which it is kept
- The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the sum of all these collision forces.The more particles that hit the walls, the higher the pressure
- A wooden table should be called a solid because it has a definite shape and volume, is rigid, does not flow, the particles are tightly bound with very less kinetic energy and, not diffuse and has negligible intermolecular spaces between its particles.
- We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert. Answer: (a) The particles of a gas are constantly moving in all the directions with different speeds. Therefore they do not have a fixed volume and hence completely fill the vessel in which they are kept.
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tarunchopda:
copy paste from ncret
Answered by
2
1) A gas has larger empty space in it's particle that why it fills completely the vessel in which it is kept
2) There is continuous collision b/w the particles of gas therefore it exerts pressure on the wall of container.
3) A wooden table is called solid because it has definite shape & occupies space. there is no space b/w it's constitutent particles.
4) air is mixture of gases and there is space b/w it's molecules we can easily pass our hand through it but in case of wood particles are closely packed so we need a karate expert.
2) There is continuous collision b/w the particles of gas therefore it exerts pressure on the wall of container.
3) A wooden table is called solid because it has definite shape & occupies space. there is no space b/w it's constitutent particles.
4) air is mixture of gases and there is space b/w it's molecules we can easily pass our hand through it but in case of wood particles are closely packed so we need a karate expert.
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