Alice’s Secret Magic Pill (Biology Experiments)

In Wonderland, Alice ate a little pill and grew and grew and grew. Do you suppose it was made of yeast?
Things Required:
1/4 cup (60 ml) of warm water
1 tablespoonful of sugar
1/2 package of dry yeast
2 bowls
3½ cups (392 g) of flour
A measuring cup
3/4 cup (180 ml) of water
Pinch of salt
Wax paper or plastic wrap
Put the warm water in a cup. Test a drop of it on your wrist. It should not feel hot. Stir in the sugar and the yeast. Let it stand. Within five or ten minutes, bubbles appear on the surface.

While you are waiting, mix the flour and salt and 3/4 cup (180 ml) of water in one of the bowls. Divide the mixture in two, and put half into each bowl.
Add the bubbly yeast to the first bowl. Cover both bowls with wax paper or plastic wrap and let them stand in a warm place from 45 minutes to an hour.
This Is What Happens:
The mixture with the yeast doubles in size. The other remains the same size.
Science Behind It:
The yeast converts the flour into sugar molecules. It eats the sugar, digests it and uses it for energy, producing carbon dioxide, bubbles which puff up the mixture.

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