Invisible Ink Messages

This activity is ideal for elementary and middle school students!

Materials:

• Cardstock

• Measuring spoons

• 3 cups or small bowls

• Spoon

• Q-tips or a brush

• Old newspaper or cardboard

• Paper Towels

• Water

• Lemon or lemon juice

• Iron

Directions: Squeeze the juice of half a lemon into a cup or small bowl. Add half a teaspoon of water to the lemon juice and mix it with a spoon.

Dip a Q-tip into the lemon juice-water solution.

Use the damp Q-tip to draw a letter, symbol, or write a secret message on the white cardstock paper. Re-wet your Q-tip if necessary. Be careful to not soak the paper too much!

Let the paper dry completely.

With the help of an adult, plug in the iron and put it on a high setting.

Run the hot iron over the paper to reveal your message!

Idea By: Science Buddies