Have you ever wondered that a secret message can be codded on an egg?! Let us find out!
Materials Required:
1) 1 Hard boiled Egg
2) 1 White wax crayon
3) 1 or 2 cups of distilled vinegar
4) Water
5) 1 big glass
6) A soft scrub brush
Materials Required:
1) 1 Hard boiled Egg
2) 1 White wax crayon
3) 1 or 2 cups of distilled vinegar
4) Water
5) 1 big glass
6) A soft scrub brush
Instructions
Write a message on the egg with a white crayon. And pass it out to the person you want to give the secret message to.
To Read The Message Do The Following:
1) Put some vinegar in the glass and put the egg with message written on it into the vinegar.
2) Tiny bubbles start to form on the egg. When the bubbling stops in about 1 to 2 hours, pour of the vinegar and replace it with fresh vinegar. After 4 hours pour off the fresh Vinegar. Wash the eggs under fresh water. gently scrub the crayon wax off the shell with the cleanser and brush. You can now read the message easily.
What Is Happening??
An acid is used to eat away some part of the surface of a material. Other parts are covered with a substance that the acid is unable to bite through, hence it acts like a protector and protects the surface of the material it is covering. This process is called Etching
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