Invisible Ink
Make an invisible Ink
This experiment is
really an entertainment based for kids
And you can learn
what are the fact behind in it.
Making invisible ink is a lot of fun, you can pretend you are a secret agent as you keep all your secret code and message hidden from other. All you need is common basis household object and the hidden power of lemon juice.
What you'll need:
1. Half a lemon
2. Water
3. Spoon
4. Bowl
5. Cotton bud
6. White paper
7. Lamp or Other light bulb
Instructions:
*Squeeze some lemon juice into the bowl and add a few drops of water with it.
*Mix the water and lemon juice with spoon
*Dip the cotton Buds into the mixture and write a message onto the white paper
*Wait for the juice to dry in the paper, so it becomes completely invisible to your naked eye.
*When you are ready to read your secret message or show it to some one else, heat the paper by holding it close to a light bulb.
What's happening:
Lemon juice is an organic substance that oxidized and turn brown when heated. Diluting the lemon juice in water will makes it very hard to notice when you apply it the paper, no one will be aware of its presence until it is heated and the secret message is revealed. Other substance which work in same way include orange juice, honey, milk, onion juice, vinegar and wine. Invisible ink can also be made using chemical reactions or by viewing certain liquid under ultraviolet (UV) light.
Nice my kids really enjoying
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