- Fill half of the bottle with vinegar.
- Fill the balloon with sodium bicarbonate. Use the funnel.
- Adjust the balloon to the bottle.
- Pour the bicarbonate to the vinegar.
- The balloon starts to blow up.
When bicarbonate mixes with vinegar (an acid) it produces carbon dioxide. This is the gas that blows the balloon up.WHAT DO YOU THIN ABOUT IT? WRITE YOUR COMMENTS!