Sugar and vinegar: The vinegar in this condition will decrease the environment's pH, making it more acidic. If the pan becomes full of water before the balloon is completely submerged, go on to step 16.d. and then repeat steps 16.b. to 16.d. until you can completely submerge the balloon. R. Fogel. (November 13, 2006). Fun Facts About Fungi. Utah State University. Retrieved July 14, 2021.

Latex balloons, around 9 to 12 inches inflated size (5). These may be found at discount and/or party-supply stores, or through online suppliers such as Once you have registered with our community you will have access to view 1000′s of images of antique bottles and related collectable’s from across the world that have been submitted by our members, we hold monthly competitions and polls so you can enter your favorite, newly acquired and dug items, and then vote on items entered at the end of the month, we post the latest updates about bottle shows, clubs and other events, there is a large number of interesting articles relating to company histories including archive photos of 100′s of old businesses dating from the 1800′s such as public houses, breweries, drug stores, advertising, you will also be able to view photos and digging reports posted by our members from long forgotten old Victorian and Edwardian refuse dumps, our members and forum team have a vast experience in the identification of antique bottles and related items between them and are always on hand to help wherever they can. Plastic 2 L bottles (5). If you do not want to clean out and reuse the same bottles after each trial, you will need 10 additional bottles. For example, if the balloon for bottle #2 displaced 950mL in trial 1, 800mL in trial 2, and 1200mL in trial 3, then the average water displaced for #2 would be 983mL (since 950mL + 800mL + 1200mL = 2950mL, and 2950mL ÷ 3 = 983mL).Using the water from the pot will help you make sure that the water in each bottle is the same temperature.

Adjust the temperature of the hot water coming from the tap until it is almost too hot to hold your hands under. Use this temperature water to fill the pot. In this experiment, you added the same amount of sugar to each bottle because it is what the yeast uses to make CO 2 gas during fermentation. If you add more sugar, will you always get more CO 2 gas? How much more sugar can you add? Is there a limit? Figure 2. Stretch the balloon completely over the bottle's opening, going over all of the bottle's ridges, as shown here. Wikipedia contributors. (February 22, 2014). Yeast. Wikipedia, The Free Encyclopedia. Retrieved February 27, 2014.You could try this science project again but instead of comparing salt, baking soda, and vinegar, you could try comparing different types of sugars or sugars from different sources, such as from various juices. Add 2 tbsp. of vinegar to bottle #5. How do you think being in an acidic environment will affect yeast fermentation?