Objective
Analyze how varying temperatures influence the rate of yeast fermentation.
Materials
- Yeast
- Sugar
- Warm water
- Balloons
- Bottles
- Thermometer
- Warm bath
- Notebook for observations
Instructions
- Mix yeast, sugar, and warm water in each bottle.
- Stretch a balloon over the opening of each bottle to capture the gas produced.
- Place each bottle in a different temperature setting (e.g., room temperature, warm bath, refrigerator).
- Measure the temperature of each environment using a thermometer.
- Observe the balloon over several hours to see how much it expands.
- Record the size of the balloon at regular intervals in a notebook.
- Compare the rate of fermentation by measuring the amount of carbon dioxide produced at each temperature.
- Draw conclusions about the optimal temperature for yeast fermentation.