STEM+Fair+ABSTRACT+ICS19SophSa

Abstract:

People are not always wondering what is in their drinks that can affect showing a smile, so what is in their drinks? Tannic Acid is a type of acid that is known for changing the color of teeth that

can also mess up

smiles. This investigation looked into which type of sugary beverage would stain teeth more coke, tea or coffee, but teeth were not used, hallowed out egg shells were.

The eggs were hallowed out and put into three cups, each cup contained a different liquid coke (independent variable), coffee (independent variable), tea (independent variable), and water (as

the constant variable).

Then for a period of five days photos were taken to show the difference between shades.

The hypothesis for this project was that Black Tea would stain teeth more than Coke or Black Coffee.

The investigation resulted in Coke getting stained more harsh than predicted. In conclusion the objectives of this project were me by results and background research being found.