Procedure: 1. Mix the flour, sugar and one cup of warm water together in the bottle. 2. Cover the top of the bottle with the balloon, and then observe for a few minutes. 3. Add the yeast to the remaining half cup of warm water in the glass. 4. Remove the balloon and add the yeast-water mixture to the bottle. Stir the mixture using barbeque stick. 5. Seal the bottie by putting back the balloon. Observe every minute. Question for Analysis: 1. What did you observe after the yeast was added to the mixture? 2.Yeast contains enzymes. Why enzymes considered catalysts?

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Procedure:
1. Mix the flour, sugar and one cup of warm water together in the bottle.
2. Cover the top of the bottle with the balloon, and then observe for a few minutes.
3. Add the yeast to the remaining half cup of warm water in the glass.
4. Remove the balloon and add the yeast-water mixture to the bottle. Stir the mixture using barbeque
stick.
5. Seal the bottie by putting back the balloon. Observe every minute.
Question for Analysis:

1. What did you observe after the yeast was added to the mixture?
2.Yeast contains enzymes. Why enzymes considered catalysts?

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