Eggs-periments

We have been learning all about the Human body in Science and how important it is to look after our bones and our teeth. To understand the importance of looking after our teeth, we carried out some investigations into the effect of different substances on egg shells. We used egg shells because they are made up of similar material to our teeth, but are just a bit thinner. We put egg shells in coca cola, orange juice, vinegar and water and left them for a week. We discovered that after a week, the coca cola, vinegar and orange juice were so acidic that they had begun to wear away the egg shells. However, the water had no effect on the shell at all.