PRESENTATION OUTLINE
Introduction
Have you ever wondered if gas takes up space? Well, your question will now be answered. Just give us a few pages. We are going to blow up a balloon, using only 1 ounce of water, an empty soda bottle, 1 teaspoon of baking soda, a drinking straw, 1 cup of vinegar, and of course, the balloon. Our only question is, what will happen during the chemical reaction that causes the balloon to blow up? I guess we'll find out!
First, we put 1 once of water in the bottle, and added 1 teaspoon of baking soda. Then, we stirred with the straw until the baking soda dissolved In the water. We then poured in 1 cup of vinegar, and stretched the balloon over the mouth of the bottle. At first, the bottle just had a lot of carbon dioxide bubbles inside, waiting to pop. The balloon then started to puff up, and the bubbles disappeared. We compared our project to Bella and Maddie's, and it looked like the vinegar had worked better than the lemon juice. Our balloon had puffed up more than theirs, though they had used the same amount of ingredients as we did.
This experiment proved that gas DOES take up space, though you cannot see most of it. It proved this because of how the gas that was formed stretched the balloon to the stage of being blown up. If you were to push on the balloon, you would feel pressure on your finger. The bottle would also have a slight bulge in its side, since the carbon dioxide has nowhere to go. After a week of waiting, the balloon had actually sucked itself into the bottle, because the gas had turned back to its original state, a liquid. The mass itself did not shrink, but instead densified, leaving smaller space in the bottle, and nothing more than a small amount of oxygen to fill it. This had created a vacuum, sucking itself inward. Even the bottle had then gotten wrinkly, like a prune.
