how-to-make-invisible-ink

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Interactive video lesson plan for: How to Make Invisible Ink

Activity overview:

Nutella Bread Recipe: https://www.youtube.com/watch?v=8eHPkpCGdEY

Watch more How to Do Fun Tech & Science Projects videos: http://www.howcast.com/videos/265061-How-to-Make-Invisible-Ink

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

Step 1: Put lemon juice in bowl
Put the lemon juice in a bowl and dip your cotton swab in the lemon juice.

Tip
Using milk, vinegar, or orange juice instead of lemon juice will have the same effect.

Step 2: Write your message
Write your secret message on the paper with your cotton swab and let the writing dry completely. The message will be invisible when the message dries.

Tip
You can use a paintbrush or a toothpick instead of a cotton swab.

Step 3: Heat the paper
Hold the paper near the light bulb to expose it to the heat, but don’t rest the paper on the bulb.

Step 4: Message appears
Watch in amazement as the message magically appears. The words will appear in a tan or brown color.

Did You Know?
Did you know? Arizona and California produce 95 percent of the U.S. lemon crop.

Tagged under: making,constructing,mixing,invisible,ink,pen,writing,clear,message,paper

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