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The Mystery of Invisible Ink

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石
石曉彤 老師 SHEK HIU TUNG

Explore invisible ink methods using household items like lemon juice. Learn safe heat handling, revealing techniques, and historical uses, all while enjoying a fun, hands-on experiment!

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Community

Slides (22)

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What materials around us can be used as invisible ink?

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What is a safe way to handle heat when working with invisible ink?

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Lemon Juice Invisible Ink (Chemistry)

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What is the most common ingredient in invisible ink?

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What do you think is the most interesting use of invisible ink?

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