The document summarizes a balloon inflation experiment where yeast, sugar, hot water, and a balloon are used. The experimental procedure has students pouring yeast, sugar, and hot water into a bottle and placing a balloon over the bottle for 30 minutes. During this time, the yeast consumes the sugar and releases carbon dioxide gas, causing the liquid to foam and the balloon to inflate. The scientific explanation is that this demonstrates the process of fermentation.

1. BALOON INFLATION EXPERIMENT
At,
PSLE Science Tuition in Singapore

2. Discussion points
 Materials
 Experimental procedure
 Experiment Results
 Scientific explanation

3. Materials
 plastic bottle.
 150 ml of hot water.
 Yeast.
 Sugar.
 Balloon.
 Tea spoon.

4. Experimental Procedure
 Pour three tea spoons of dry yeast and two teaspoons
of sugar into a bottle.
 Slowly pour hot water into the bottle.
 Put the balloon over the bottle and wait for half
an hour.

5. Experimental Result
The liquid starts to foam, and the balloon inflates.

6. Scientific Explanation
Yeast is a microscopic fungus that consumes sugar
and releases carbon dioxide. The numerous bubbles of
this gas rise to the surface, causing the liquid to foam
and the balloon to inflate. In chemistry, this process is
called fermentation. This particular chemical reaction
involves the release of ethyl alcohol and
carbon dioxide

7. Chemical Formula
С₆Н₁₂О₆ → 2С₂Н₅ОН + 2СО₂

8. Fermentation

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