What causes the balloon to inflate in the yeast experiment?
What causes the balloon to inflate in the yeast experiment?
The bubbles they saw were tiny bubbles of carbon dioxide gas that the yeast was producing as it “ate” the sugar. As the yeast continued to react, it converted more and more sugar into carbon dioxide gas. This gas was trapped in the balloon, making it inflate as if by magic!
What is the control in the yeast balloon experiment?
Since yeast uses sugar to make energy, we will not expect anything to happen to our negative control subject as it will not be given any sugar to produce carbon dioxide….Introduction.
| Research Question: | How does the type of sugar affect carbon dioxide production in yeast? |
|---|---|
| Age: | Middle school and up |
What temperature of water do you need to use for yeast?
The appropriate temperature depends on the bread making method being used. Dissolve dry yeast in a water temperatures between 110°F – 115°F. If yeast is added directly to the dry ingredients, liquid temperatures should be 120°F – 130°F.
What caused the balloons to increase in size?
When gas molecules are warmed, their average kinetic energy also increases. This means they move faster and have more frequent and harder collisions inside of the balloon. When cooled, the kinetic energy of the gas molecules decreases, meaning they move more slowly and have less frequent and weaker collisions.
How long does it take for yeast to produce CO2?
Using 1/4 teaspoon of yeast and 2 cups of sugar will result in CO2 production for about 4 to 5 weeks.
How do you make a balloon out of yeast?
Stir in one packet of yeast and two tablespoons of sugar. Keep stirring until the mixture is dissolved. Place the funnel at the mouth of the water bottle, and pour the sugar-water-yeast substance into it. Stretch the mouth of the balloon over the mouth of the water bottle.
Why do yeast balloons pop in bread dough?
They love to eat sugar and starches and as they grow, they make carbon dioxide gas. In bread dough, the gas forms lots of tiny bubbles that pop during baking, leaving tiny holes. In this experiment, the yeast eats sugar and the carbon dioxide gas they create is trapped in sealed plastic bags, making them blow up like balloons.
What do you need to know about the yeast experiment?
For yeast to be active, it needs to be warm and moist. That’s why we added lukewarm water and placed the bottle in more warm water. We set our bottle of yeast on the table and watched it while we ate lunch and read books. We checked in with our science experiment every 10 minutes or so to observe any changes.
What’s the best way to inflate a balloon?
Inflating a balloon with yeast is a wonderful experiment to do with preschool and kindergarten aged children because all of the materials are nontoxic. It’s nice when the kids can help measure out ingredients without worrying about what they are touching. My kids helped me measure the yeast, sugar, and warm water into a cup.