- The purpose is to write a message that will magically appear.
MATERIALS NEEDED:
Soup bowl
Tincture of Iodine
Lemon
Notebook paper
Cup
Art brushPROCEDURE:
Pour 1/2 cup water into a bowl.
Add 10 drops of Tincture of Iodine to the water and stir.
Squeeze the juice of the lemon into the cup.
Cut a section from the notebook paper. The paper must fit inside the bowl.Dip the art brush into the lemon juice and write a message on the piece of paper.Allow the juice to dry on the paper.Submerse the paper in the iodine solution in the bowl.RESULTS:
- The paper turns a blue-purple except where the message was written. The words are outlined by the dark background.
- The starch in the paper combines with the iodine forming iodine-starch molecules. These molecules are blue-purple in color. Vitamin C combines with iodine to form a colorless molecule. The area covered with lemon juice remains unchanged because the paper is coated with vitamin C from the lemon.
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- The paper turns a blue-purple except where the message was written. The words are outlined by the dark background.
MAGIC WRITING
INTRODUCTION: