ƒeƒLƒXƒg ƒ{ƒbƒNƒX:

MATERIALS:

· Turmeric powder (curry powder)

· Grape juice

· Red sweet potato powder

· Soap

· Rectangular container

· Writing paper (calligraphy paper or any thick absorbent paper)

PROCEDURE:
ƒeƒLƒXƒg ƒ{ƒbƒNƒX: SCIENCE CONCEPT ƒeƒLƒXƒg ƒ{ƒbƒNƒX: Turmeric (curry powder) contains CURCUMIN a bright yellow substance that turns into red when mix with alkaline and yellow when mix with acid. Soap on the other hand is an alkaline. When you apply soap on your hand and press it to the paper dipped in turmeric, it turns the paper into red. The same happens to red sweet potato powder and grape juice that both contains ANTHOCYANIN which turns into green when mix with alkaline and red when mix with acid. The paper with anthocyanin reacted on the alkaline property of soap thatfs why your hand print is green in color.

Taking it further

1. Use colored paper and see if they have effect on the procedure.

2. Try other substances like blueberry juice and other colored drinks.

3. You can also use other objects instead of your hand.

1. Pour water on the container about 1 cm deep. Sprinkle turmeric powder and mix it until the water become yellow.

2. Spread and dip the paper gently into the water. Wait until the paper absorbs the color. Get the paper and dry it.

3. Wash the container. Pour the grape juice in the container about 1 cm deep. Do procedure No. 2.

4. For red sweet potato powder, do the same procedure on curry powder (procedure No.1 and No. 2).

5. After drying the paper, wet your hand and apply soap on your palm.

 

6. Press your hand firmly on the colored paper and removed it.

7. Now you have artistically hand printed paper!

Hand Printing using SOAP

DRIED PAPERS
ƒeƒLƒXƒg ƒ{ƒbƒNƒX: EXPERIMENT LISTS PHYSICS Balancing a Dragonfly Does Air Takes Up Space? Improvised Battery (Option 1) Improvised Battery (Option 2) Improvised Battery (Option 3) Tornado in the Bottle Diver Surface Tension and Air Pressure Aluminum Wrap Railway Light to Sound Magnetic field in 3D Simple Kaleidoscope Art in Polarizer Simple Spectroscope Electrostatic Motor Paper Earphone CHEMISTRY Vegetable/Fruit Charcoal Red Cabbage Extract (Identifying Acidity of a Liquid) Alkalinity of a Liquid Crayon Making Hand Printing using Soap Testing Raindrop Acidity using Red Sweet Potato Powder Magic! (Water doesnft fall?) BIOLOGY 1. Leaves Puzzle ACTIVITIES Fossil Hunting Gold Sieving Smelting Steel Observing Classes Attending Trainings ŠpŠΫŽlŠpŒ`: HOME