how are teeth and egg shells alike?

Question

my nephew is doing an experiment on how different acids affect teeth. We are going to use egg shells for teeth. How do they compare to each other. Don't just say calcium because I know that
Queastion is for people who know what they are talking about

Answer 1

The bacteria in our mouth combines with the sugar in the food we eat to form an acid. This acid "eats" away at the surface of the tooth. Over a period of time repeated acid attacks can remove enough of the tooth surface away to form a cavity in the tooth.

Materials Needed for Activity

Glass container

Cola drink

Penny

Pour cola in the glass container and then place the penny inside.
Discuss with the children what effect they think the cola will have on the penny.
Let the penny sit in the cola overnight.
Observe the fact that the cola "ate" the coating of debris from the coin.
Discuss the comparison between what happened to the penny to the effect of acid attacks on the surface of our teeth


VIS A VIS eggshell

How does the egg shell behave in an acid environment?

NOTE: Vinegar is an acid (acetic acid, CH3COOH).
White vinegar from the grocery store is usually a 5% solution.


Materials
3 raw eggs
3 jars with lids (larger than an egg, clean jelly, olive, or pickle jars)
white vinegar, enough to fill the 3 jars
measuring tape (vinyl one for sewing is good)
kitchen scale (optional)
paper towels

Procedures

You will be pouring vinegar over the eggs in the jars to observe the
changes over the 3 day period.


How will you find the size of each egg before experimenting? Make a chart for all the measurements you take for the three eggs.


What other measurements do you need (for the jars, the vinegar?) Add these to your table.


Think about how you will put the eggs in vinegar for 3 days and what observations you need to record. How often will you check the eggs? Make a chart to record your observations.


After 72 hours, carefully pour the vinegar off the eggs. Rinse them gently with water and pour off. Keeping track of which egg is which, carefully dry them with paper towel and repeat the measurements you made before the treatment. Save the eggs for the next investigation. Make a chart to record the new measurements.

Answer 2

Well... (To be perfectly honest...)

Pros: Both are white - generally.

Cons:
However egg shells don't have enamel on them - human teeth do. Egg shells also don't have the same structure and toughness as teeth. Shells, of course, are brittle. Teeth are designed to take a beating. The shells might actually dissolve into the acid because of their structure difference.

Recommendation (if possible):

Substitute the egg shells for actual bones. (Not human, of course, that might be just slightly illegal!) Have whole cut-up chicken one night for dinner - but don't throw out the bones. Once you are done with the meal, clean the bones as best as you can and use them instead. The chicken bones should supply the same effects as teeth - because... well... they are both bones. (Duh... X-D)

Good luck!

Answer 3

they are both white and fragile. an egg is the outer shell for the chick or whatever is in the egg and teeth are the only visible part of your skeleton.

Answer 4

oyster shell is in basic terms calcium carbonate. you would possibly want to besides munch down on limestone - it is evidently the position limestone comes from afterall. try in basic terms eating perfect, get your vegetables and fruit

Answer 5

both are calcium compound. both are calcium carbonate.

Answer 6

they are made of calcium