The Egg Experiment

We were learning all about the Digestive System. We discussed all the different parts and their functions. We focused a lot on the mouth and the teeth. The egg shell acts very similarly to the tooth so we undertook some fair testing. We compared eggs in water, in coca cola and in vingear. The egg in water acted as a control to compare the other eggs to. We left the eggs for 24 hours. The egg in water did not change. The egg in the vinegar dissolves the shell, similar to having lots of acidic in our diet. The egg shell in coca cola changed colour to a very dark brown. This shows the effect of drinking fizzy drinks, teas and coffees. We also cleaned this egg with a toothbrush; highlighting the importance of cleaning our teeth everyday.