Question

Q. 1- 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.
Q. 2- Convert the following temperature to Celsius scale :
(a) 300 K
(b) 573 K
Q. 3- For any substance, why does the temperature remain constant during the change of state?
(PLS ANSWER)​

Answer 1

Answer:

a.because gas has loose molecules

b.because gas exerts pressure in all directions

c.because its moleculs are tightly compressed and it has high inter particle force of attractio

Explanation:

Answer 2

1) because gas is a completely compressible substance

2)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.

3) a wooden table is called a solid because of it's molecular property it's molecule are closely packed as of solid

4) 300K

300 - 273

27°C

573K

573 - 273

300

5) an object don't change it's temperature when changing state because the heat absorbed is directly used in change of state . This process is known as LATENT HEAT