Invisible Ink Three Ways

Have you ever wanted to send a secret message to a friend? Its easier then you think! To others the paper looks completely blank, but with the right tricks, you can write and read invisible ink!

The Milky Way

Materials:

bowl, milk, q-tip, paper, 100-watt lamp

Procedure:

  1. Put a little milk in a small bowl.
  2. Write with the milk on a piece of paper with a Q-tip or a brush.
  3. Let your message dry completely.
  4. To read the message just heat the paper. Use an iron or 100-watt light bulb or stove element. Don’t rest the paper on the bulb. Ask an adult to help in case a fire starts and never use a halogen light.

Explanation:

Milk is an organic product which means it comes from a living thing. When it’s heated, it burns at a slower rate than the paper. Your invisible message shows up brown.

The Lemony Way

Materials:

bowl, milk, q-tip, paper, 100-watt lamp, salt, wax crayon

Procedure:

This works the same way as the milk method.

  1. Simply dab a Q-tip or brush into a bowl of lemon juice and write away. Just make sure you don’t use too much.
  2. To see the message, simply heat the paper after it dries.
  3. Another way to see the message is put salt on the drying ink.
  4. Give it a minute and then wipe the salt off.
  5. Use a wax crayon to color over the message.

Explanation:

Both lemon juice and milk are mildly acidic and acid weakens paper. The acid remains in the paper after the juice or milk has dried. When the paper is held near heat the acidic parts of the paper burn or turn brown before the rest of the paper does.

 

The Baking Soda Way

Materials:

Baking Soda, water, Q-tip, grape juice, sponge

Procedure:

  1. Mix about 1/4 cup of baking soda and 1/4 cup of water.
  2. Next, write using a Q-tip or paintbrush on a piece of paper.
  3. Let it dry completely.
  4. To read the secret message, submerge paper in a shallow pan of grape or cranberry concentrate. Don’t forget – juice concentrate can stain.

Explanation:

Grape juice has an acid that reacts with the baking soda. A different color appears wherever the secret message is written.

Posted By Astrid

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