Notes

Here's How:

There are at least two methods to use baking soda as an invisible ink. Mix equal parts water and baking soda.
Use a cotton swab, toothpick, or paintbrush to write a message onto white paper, using the baking soda solution as 'ink'.
Allow the ink to dry.

One way to read the message is to hold the paper up to a heat source, such as a light bulb. The baking soda will cause the writing in the paper to turn brown.
A second method to read the message is to paint over the paper with purple grape juice. The message will appear in a different color.

Tips:

If you are using the heating method, avoid igniting the paper - don't use a halogen bulb.
Baking soda and grape juice react with each other in an acid-base reaction, producing a color change in the paper.
The baking soda mixture can also be used more diluted, with one part baking soda to two parts water.
Grape juice concentrate results in a more visible color change than regular grape juice.

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Write a secret message with invisible ink using these simple household items.

you will need lemon juice, A bowl, A cotton sawb, White paper A light source with a light bulb, milk, venegar, orange juice (optional) paintbrush and toothpick.

step1. put the lemon juice in a bowl and dip your cotton swab in the lemon juice.
tips>> using milk, veveger, or orang juice instead of lemon juice will have same effect.


step 2. write your secret message on the paper with your cotton swab and let writing dry completely. the message will be invisible when the message dries. you can use a paintbrush or a toothpick instead of a cotton swab.

step 3. hold the paper near the light bulb to expose it to the heat, but don't rest the paper on the bulb. step 4. watch in amazement as the message magical appears. the words will



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Squeeze the juice of half of a lemon into a bowl.


Add a few drops of water. Stir the juice and water with a spoon.

Dip a cotton swab into the lemon juice mixture and write a message on a piece of white paper. A feather, a toothpick, a fountain pen, a paintbrush or a calligraphy pen will also work in place of the cotton swab.

Allow the invisible ink to dry. As the ink dries, your message will disappear.

Hold the paper that contains your invisible ink message over a light bulb or flame/candle. Keep the paper near the bulb or flame/candle until the message reappears. Be careful not to put the paper too close if you are using a flame/candle.

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Dip a cotton swab into a mixture of 1/4 cup (60 ml) of baking soda and 1/4 cup (60 ml) of water. Use the swab to write a message on a white piece of paper.

Wait until the ink is dry.

Dip a paintbrush into some grape juice concentrate or any dark juice. Paint the grape juice over your message and wait for the message to appear.

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Use a white crayon to write a message onto a white piece of paper.

Paint over the message using watercolors and a brush. The message will reappear.

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