Conservation of Mass Lab Investigation

Our hypothesis for this lab was that the balloon will get filled up with gas, and this will cause it to expand and get larger. We used a filled Mountain Dew bottle and an empty Pepsi bottle, both of these bottles were 20 oz. The pop rocks were poured into the Mountain Dew soda bottle, and the balloon was stretched out and put on the top of the bottle. When the pop rocks were poured into the soda bottle the soda started to fizz up and a chemical reaction was taking place. The soda helped dissolve the sugar coating of the pop rocks, which allowed the carbon dioxide gas to escape. This was a physical change because the state of matter was altered, and there wasn’t a new solution formed. While doing the experiment I noticed that our balloon wasn’t filling up that

much so we decided to shack the bottle.

Doing so made the soda fizz up more and made the pop rocks dissolve more.
In an attempt to make the balloon blow up bigger we took off the balloon and added more pop rocks into the soda, when we tried to but the balloon back on the soda fell over and spilled all over the table, this was a failed attempt. Some possible variables were the types of soda used, the amount of pop rocks, and how stretched out the balloon was.

In the second experiment we used baking soda and vinegar. The reaction was a lot faster then the first one, but the reaction was smaller so less gas was released.