We took 10 eggs (not hard boiled) and put them in clear plastic cups. We covered them with different kinds of pop and juice and made our observations of what the eggs looked like. We predicted what we thought would happen to the eggs after sitting in the liquids.
After 2 days, we checked the eggs again. We noticed that the eggs that were sitting in the pop were discolored. The shells of the eggs that were sitting in the Gatorade, grape juice and Energy drink started to look like the liquid was eating through the shells.
We checked on the eggs a week later. All of the eggs in the regular pop and the water were stained. The 4 eggs that looked like it had the most change are below. The egg in Gatorade had the most change. The shell looked like it was almost gone.
We checked the eggs again after 2 weeks. We noticed the same changes occurring. The shells looked like they were being eaten through. (I am not sure where my pics are...maybe on other camera?)
The eggs below having been sitting in their liquid for 3 weeks.
We determined that the Gatorade was the worst thing for our teeth, followed by the Grape Juice and Energy Drink. We threw out the egg that was in the V8 juice after week 1 because the juice became a thick mess covered in mold.
We learned that if we can't brush our teeth soon after drinking one of these beverages, we should at least rinse our mouth out with water. Hopefully after doing this experiment my kids will keep in mind what could happen to their teeth if they don't brush them.
We really enjoyed writing in our journals after we made observations of what was happening.
I highly recommend doing this with your kids. Mine loved it and we had great discussions.