Does the egg and toothpaste trick work?

Posted on by Muna Meyer

Does the egg and toothpaste trick work?

Fluoridated toothpaste is used to coat part of an egg, which is then soaked in vinegar for several hours. The vinegar will soften the toothpaste-free part of the egg shell, while the part covered by toothpaste remains hard. Bubbles will form on the shell of the unprotected egg while it is soaking in the vinegar.

Why do we use eggs for teeth in an experiment?

This is an easy experiment for kids. The idea is simple: Eggshells are a lot like tooth enamel. And, like tooth enamel, they will get eaten away when they come into contact with acidic beverages.

How do you do the egg and toothpaste experiment?

  1. Take one egg and coat it in your choice of toothpaste containing fluoride and let set for 24 hours.
  2. After 24 hours place each egg (one coated in toothpaste and one not) in separate jars containing vinegar.
  3. Observe the immediate effect. (
  4. After 24 hours take the eggs out of the vinegar and observe the difference.

How long do you have to soak an egg in vinegar?

If you leave the egg in the vinegar for about 36 hours, eventually all the calcium carbonate will be dissolved by the acetic acid, leaving just the soft membrane and yolk behind.

What happens to egg in Coke?

After the Coca Cola and egg was left for a year, the soda reacted with the egg shell made up of calcium carbonate reacted with the acid and the result was surprising. All that was left in the bowl was some brown disgustingly gooey mess.

How is an eggshell like a tooth?

Eggshells are similar to tooth enamel. They share the same coloring, ranging from a light yellow to white. In addition, the eggshell protects the egg from breaking, just as tooth enamel protects the tooth from decaying.

How do you make a soft egg experiment?

Directions:

  1. Pour 1 cup of vinegar into jar.
  2. Add the egg.
  3. Record what you see (bubbles rising from the egg)
  4. Leave the egg in the vinegar for one day.
  5. Remove the egg and feel it.
  6. Record your observations (the egg shell will be soft)

What is vinegar for egg experiment?

But what happens if the chemical prevents the thick coating of calcium carbonate around the egg from forming? We can do an experiment, using ordinary kitchen vinegar (dilute acetic acid), and see what happens to the calcium in an eggshell when it is exposed to an acid.