Live yeast can be used to inflate a balloon if you give the yeast something to ferment (such as sugar). They then produce carbon dioxide as a waste product that could inflate a balloon. You should not expect it to be buoyant, however, for CO2 is heavy as gases go (considerably heavier than air, for instance).
The yeast cannot use salt for much of anything, however.
When water is added to yeast, the reaction creates a gas. This in turn inflates the balloon. Wheither or not the balloon will float, I do not know.
Yeast uses sugar in a process called glycolysis to produce pyruvate. Pyruvate is then converted to ethanol and CO2 gas is given off in the process. This gas causes the balloon to inflate.
the purpose is that when you put the yeast to make bread you put it in the oven on a hot temperature so that the warm water be on hot temperature so the yeast will interact.
Yeast eats the sugar giving off CO2 which is a gas that will inflate the balloon. Added: But since carbon dioxide is heavier than air this balloon gas will never reach the 'top'
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This is a physical change.
I'm pretty sure it's both, because while yeast and flour mixed with water smells alcoholic (which is a sign of fermentation), when it's mixed with yeast and water it smells like milk. Also, it barely grows, less than just yeast and water. Correct me if I'm wrong!
you did not answer my question . please answer the question I give you I said the hypothesis about how to make a ballon blow up using soda and yeast
As anyone who bakes bread, or brew wines and beers will know, yeast needs a moist, warm environment in which there is dissolved liquid sugar available (not salt). The yeast cells rapidly multiply as the yeast feeds off the sugar, and gives off carbon dioxide gas and alcohol. It is the carbon dioxide gas that will inflate the balloon. Salt would probably kill off the yeast.
Yeast eats the sugar giving off CO2 which is a gas that will inflate the balloon. Added: But since carbon dioxide is heavier than air this balloon gas will never reach the 'top'
yeast! people why are you sooooo stupid?
The sugar is needed as food for the yeast. The yeast gives off carbon dioxide as it digests the sugar. The carbon dioxide could be used to inflate the balloon. Without the sugar, the yeast remains dormant and does not give off carbon dioxide.
the balloon will inflate
The gas that is given out during the reaction of baking soda and coke could inflate a balloon
To inflate the balloon. Whether the gas is helium or just air from your lungs, gases are needed to inflate the balloon.
You get a soccer ball pump needle a stick it into a balloon and it will inflate
Inflate it with water.
Yes this can be done but the process would be really slow. You can try adding some yeast to hydrogen peroxide and let the balloon be tied to the bottle containing that mixture. After couple of hours you will have inflated balloon.
If there is a little moisture too, then the yeast cells will multiply and turn the sugar into alcohol and carbon dioxide gas. The carbon dioxide gas will inflate the balloon.
-- Inflate the balloon with some substance that is less dense than air. OR -- Inflate the balloon with air, then heat it after it is sealed.