Chloe Y & Timothy Y. 2nd Grade Mrs. Hellman
Observation
People say that sugar damages the teeth badly if you don’t brush them. Is it true?
What happens to your teeth ?
Hypothesis
My hypothesis is maybe the sugar eats the teeth.
Materials
- Beverages: sugary – Soda, energy drink , sports drink , Juice; vinegar, orange juice, water ,milk.
- Clear cups or glasses (one for each drink)
- Hard-boiled eggs
- toothbrush
Instructions
- Label each cup with the liquid and carefully add a hard-boiled egg to each cup.
- Pour 1 cup of each type of drink into its own cup. Make sure to include one cup with water (control). Soak for 48 hours at room temperature or refrigerator
- Take out soaked hard-boiled eggs and make observations about its color and texture. Compare each experimental eggshell to the “control” eggshell that was just soaked in water.
- Can you brush off the stains using toothbrush?
Experiment Observation
The vinegar shell is gone! The apple juice has turned deep brown! It not the actual sugar that harms the teeth. It’s the acid that the bacteria releases that destroys the teeth. So, my hypothesis is incorrect. When you use the toothbrush to brush off the color it doesn’t work!
Summary
It is the acid that breaks down the teeth not sugar. The color that is stained on egg does not come off easily. So, we must drink very less of the sugar that produces the acid and damages our teeth.
