Procedure:
- Pour an equal amount of each beverage into separate plastic bottles.
- Mix a couple teaspoons of vinegar, the vinegar represent your stomach's acid.
- Blow up and release the air in the balloon for each bottle. This will stretch the balloons so they are easily inflated.
- Stretch the open end of the balloons over the opening of each bottle.
- Place the balloons on a warm heating pad.
- Observe the balloons at intervals as the liquids begin to heat.
- Which liquid has inflated balloons? Which balloons are inflated more than the other balloon? How is the inflation of each balloon related to the amount of gas produce by the liquid?