S.T.E.M. Craft | Plaque Attack

Using this interactive experiment, your young scientist can measure, mix and watch the bubbles grow! As the yeast feeds on the sugar, a chemical reaction occurs and it releases a gas called carbon dioxide making tiny bubbles. Much like sugar in our mouths creates plaque too, this visual is sure to make a lasting impression. Common ingredients you probably already have in your home make this experiment easy and entertaining.

WHAT YOU’LL NEED: 

2 tsp. yeast
1 cup of warm water
1 Tbsp. sugar
cup
spoon or whisk

 

 

 

 

WHAT TO DO:

STEP 1
Add yeast to the cup.
STEP 2
Add warm water to the cup and gently stir.
STEP 3
Add sugar to the cup and gently stir again.
STEP 4
Sit back and enjoy the action!

Tips:
• Make sure the water is warm, but not hot; this will properly activate the yeast.
• Do the experiment on a surface that you don’t mind getting wet! It just keeps growing!

• After testing both utensils, the whisk mixes the mixture more thoroughly and produces faster results, so use a whisk if you have one.

 

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