Wednesday, February 9, 2011

Experiment - Whitening Teeth

Whitening Teeth and Eggs


Hypothesis


Fluoride whitens teeth.


Materials Needed


A hard boiled with its white egg shell
Coke (any black drink)
Glass bottle
Any fluoride Tooth Paste
Old Tooth Brush


Procedure


Leave the egg in a glass in coke in a glass bottle for a day. Note the difference in the egg shell after a day. Clean the egg shell with toothpaste and tooth brush.






Observation


# 1 After a day the white egg shell was discolored and turned brown.






#2 When rubbed with fluoride tooth paste with a tooth brush the egg shell turned white again.




Conclusion


Fluoride helps clean and whiten teeth.

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