Question

5. A gas in a container will
a) Spread out along the bottom of the
container
b) Spread out all through the container
c) Will not spread out at all
d) Spread out only at the top of the
container​

Answer 1

Answer:

Gases do not have a definite shape or volume because the molecules in gases are very loosely packed, they have large intermolecular spaces and hence they move around. The force of attraction between molecules is also very less, as a result gases acquire any shape or any volume.

Liquids have one free surface because they do not have a definite volume but a shape bounded by the container they are in, so the top surface of the container is the only free surface it has.

The formation of big globules is because of the forces of attraction existing between the molecules.

The particles of solid are closely packed and occupy less space while particles of gases are loosely packed and occupy the complete space available.

When the empty tumbler is tilted, the air inside the tumbler comes out and bubbles of air are seen. The air inside the tumbler was occupying space inside the beaker. When the tumbler is not tilted, the air inside does not come out, hence no bubbles are seen.