Question

Correct the statements given below:
1. Gases do exert pressure in single direction
2. Gases can neither be compressed nor be expanded
3. Two gases cannot be mixed

Answer 1

1. Gases exert pressure in all the directions.

Gases particles have weak force of attraction between them and are free to move in any direction . Thus , exert pressure in all the directions.

2. Gases can be compressed and expanded.

Gases are easily compressible because the molecules are far from each other and there is a lot empty space between the molecules.

On heating a gas it's molecules vibrate quickly and thus its volume is expanded.

3. Two gases can be mixed .

When two gases mix they form a homogeneous mixture. Each component of the mixture shares the same temperature and volume.