1. Tooth Decay Yucky!!
How Does Beverages Affect Tooth Decay
Hypothese:
I think the Grape soda pop will have the highest pH
acidity level and cause the most damage to the teeth(egg
shells)
3. Procedures:
1.Get 4 raw white eggs and use a needle to poke 2 holes
that are about 0.3 to 1cm wide in diameter on each
egg. Make sure that 1 hole is on the top and 1 hole on
the bottom of the egg.
2.Empty the yolk and the albumen by blowing them
out from the holes. Rinse the eggshells.
3.Measure1cup of each beverage and pour them in 3
glasses separately.
4.Put 1 eggshell in each glass and soak in the beverages
for 4 days.
4. Variable:
Control- I will use the same size egg, jar/cup, and amount
of liquids { Grape soda pop, water, and lemonade}
Independent- Different types of beverages with Ph levels
Dependent- The amount of damage done to the eggs(teeth)
caused by
{ Grape soda pop, water,and lemonade}
5. Conclusion:
As I was performing this experiment I did all of the same
steps with no revision to the process and all three trails
came back the same with no inconclusive results. So this
tells me that the acid found in acidic carbonated
beverages is high and the beverage will cause teeth
erosion if drunk daily. There was some strong correlation
with coloration of the beverages. In dark colored
beverages the pH level was higher than the lighter color
beverage, which is shown between the grape soda and
lemonade. The tap water egg was my control variable
and the egg pH level and coloration stayed the same with
no tooth decay at all. In conclusion, my result were very
conclusive and deemed my hypothesis correct saying that
the grape soda egg would cause the most tooth decay and
have the highest pH level.
6. pH Levels of Liquid Substances
Table 4-1
Substance Name pH Strip Color pH Level
✔ Water ✔ blue ✔ 8
✔ Grape Soda ✔ Very dark red ✔ 3
✔ Lemonade ✔ Dark red ✔ 4
pH Levels
Table 5-2
Color Pink Dark
Red
Violet Blue Blue-Green Green-Yellow
Approx.
pH
1-2 3-4 5-7 8 9-10 11-12
Acid/Base Acid Acid Acid/Ne
utral
Base Base Base
