Question

Molecules of a gas are free to move.Give reasons.​

Answer 1

Answer:

Due to intermolecular forces between the gaseous molecules.

Explanation:

Gaseous molecules are loosely held with each other. The molecules are scattered in all directions and are free to move. The solid molecules are tightly packed and thus just vibrate in their position. If the intermolecular forces are weak between the molecules, then the molecules can move freely in all directions.

Answer 2

Answer:

In a gas, particles are in continual straight-line motion. The kinetic energy of the molecule is greater than the attractive force between them, thus they are much farther apart and move freely from each other.

Explanation:

• The gas molecules are continuously and randomly moving with high velocities. These gas molecules collide with each other. In these collisions, kinetic energy is not lost. Thus they are said to be elastic.
• The molecules of a gas move apart when they collide with other gas molecules. They bounce all around the container. Gravity also has very little effect on them because of their small size. So these move randomly exerting pressure in all directions.