Question

explanation of kinetic theory class 12​

Answer 1

Answer:

The body of theory which explains the physical properties of matter in terms of the motion of its constituent particles

Explanation:

Answer 2

Answer:

Kinetic theory of gases is based on the molecular

picture of matter. A given amount of gas is a

collection of a large number of molecules

(typically of the order of Avogadro’s number) that

are in incessant random motion. At ordinary

pressure and temperature, the average distance

between molecules is a factor of 10 or more than

the typical size of a molecule (2 Å). Thus the

interaction between the molecules is negligible

and we can assume that they move freely in

straight lines according to Newton’s first law.

However, occasionally, they come close to each

other, experience inter-molecular forces and their

velocities change. These interactions are called

collisions. The molecules collide incessantly      

against each other or with the walls and change

their velocities. The collisions are considered to

be elastic. We can derive an expression for the

pressure of a gas based on the kinetic theory.

We begin with the idea that molecules of a

gas are in incessant random motion, colliding

against one another and with the walls of the

container. All collisions between molecules

among themselves or between molecules and the

walls are elastic. This implies that total kinetic

energy is conserved. The total momentum is

conserved as usual.

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