Dentist Experiment

Today 4thA and B worked on a dentist’s experiment and discovered the importance of brushing their teeth every day.    Would you like to try it at home?

INGREDIENTS: 

A toothbrush/ toothpaste with fluoride/ 2 eggs/white vinegar/2 glasses.

WHAT TO DO:

·         Brush one of the eggs with fluoride toothpaste. Put 10 cm of vinegar into two of the containers. Put the fluoride egg into one container of vinegar and the other egg into the other container of vinegar

WHAT HAPPENS:

One egg starts to bubble as the vinegar (an acid) attacks the minerals in the egg shell.

Which egg do you think is going to start to bubble? 

Miss Tilly