Question

Give Reason:-
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 land in air,but to do the same through a solid block of wood,we need a karate expert.

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Answer 1

$\huge \blue{ \bf{Question}}$

Give Reason:-

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 land in air,but to do the same through a solid block of wood,we need a karate expert.

$\huge \blue{ \bf{Answer}}$

a). There is little attraction between particles of gas.Thus,gas particles move freely in all directions.Therefore,gas completely fills the vessel in which it is kept.

b). Particles of gas move randomly in all directions at high speed.As a result,the particles hit each other and also hit the walls of the container with a force.Therefore,gas exerts pressure on the walls of the container.

c). A wooden table has a difinite shake and volume.It is very rigid and cannot be compressed.

I.e.,It has the characteristics of a solid.Hence,a wooden table should be called a solid.

d). Particles of air have large spaces between them.on the other hand,wood has little space between its particles.Also,it is rigid.For this reason,we can easily move our hands in air,but to do the same through a solid black of wood,we need to a karate expert.

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Answer 2

$\huge\sf\underline\orange{Answer: }$

(a) The particles of gases have a low force of attraction between them. The particles are freely moving in the vessel in which it is filled. 

(b) The particles of gas have the least force of attraction. They are constantly moving randomly. The particle of gas hits the walls of the container thereby applying force and hence pressure on the wall.

(c) The wooden table has a definite shape and a definite volume. The particles of wood are closely packed. They do not take the shape of the container. Hence wooden table satisfies the properties of solid.

(d) The particles of air are very loosely bounded. They are far away from each other having a lot of space between them. Hence we can easily move our hands in the air. But in a solid block, the particles are tightly held by a strong force of attraction. So there is some or no space between them. Hence we need a karate expert. 

$\sf \purple{Thanks}$