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

Explanation

To understand what makes a balloon inflate when air is filled in it, we can break down the explanation into several steps:

### Step 1: Filling the Balloon with Air
When you start to fill a balloon with air, you are introducing air molecules into the balloon.

### Step 2: Increase in Air Molecules
As you continue to blow air into the balloon, the number of air molecules inside the balloon increases.

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