Question

What makes a balloon get inflated when air is filled in it?

Answer 1

Hint: In this question, we can use the concept of motion of molecules of air. We can also use the concept of air pressure due to the molecular motion in the balloon to explain the inflation of a balloon.

Complete step by step answer:

We know that each and every object is filled with air. If we take a balloon and start filling it with air, then we find that the number of molecules in the balloon is now increasing. When the number of molecules increases, they start to collide with each other. Due to these collisions, many molecules take place near to the wall of the balloon. This initiates a high pressure on the walls of the balloon. This high pressure on the walls causes the expansion in the balloon i.e. this makes the balloon expand. Thus, the balloon gets inflated when it is filled with air.

Additional Information:
The balloon is inflated when the air is filled due to the air pressure of the molecules towards the walls of the balloon. This air pressure should be limited because if we exceed this pressure i.e. if add the number of molecules beyond the limit, then the balloon will blow up.

Note:
In this question, we have to remember that if an object is filled with something then the number of molecules will increase which gives rise to the collision between the molecules. If a wall is in contact with molecules and the molecules are still increasing then the wall is feeling high pressure.