STEMfairICS19SophSa

STEM fair Hypothesis:
====I think that tea will stain the eggshell more than coke or coffee. Based on the amount of tannic acid that is in black tea, black tea is known for having its strange bitter flavoring, well whats in the flavoring is tannic acid which is a type of acid known for changing color of teeth.====

Research:

 * ====Oral bacteria actually feed on the sugars you eat to create acids that destroy tooth enamel====
 * ====Drinking tea can cause lasting====
 * ====A cup of **tea **contains lesser amounts of caffeine than coffee ====
 * ====Green tea is another product that contains a rich concentration of tannic acid. ====
 * **coffee ** contain chemical compounds called **tannin's**
 * ====Tannin's are naturally occurring substances known as polyphenols and are present in wine, beer, fruit juices, berries, pomegranates, nuts, smoked foods, legumes, some herbs and spices====
 * Sodas are especially dangerous because it is carbonated and contains that can put holes in your teeth

STEM Fair procedure

 * 1) ====Fill three separate containers with tea, coffee, coke, and water (as the constant)====
 * 2) ====Put one HALLOWED OUT egg into each container====
 * 3) ====everyday for five days take out the egg and observe the progress between the shades====
 * 4) ====Take some photos each day to show the changes in stain color. On the day you start to notice the different shades note the date.====
 * 5) ====Records the results and compare the affects of the liquids.====