Lemon Juice Invisible Ink | Play Spies and Learn Chemistry
TheDadLab (140+ Episodes)
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1m 26s
Let's play spies and learn chemistry in the process! Lemon juice invisible ink is a cool chemistry project that you can do at home. You just need to squeeze a lemon and write your secret message using juice as ink with a brush or a cotton bud. After your ink has dried on the paper, no one will be able to read the message unless they heat the paper.
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