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Invisible Ink

Twin Cities Public Television
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In this simple chemistry activity (page 1 of PDF under SciGirls Activity: Colorblind Dogs) about acids and bases, learners will mix a baking soda and water solution and use it to paint a message on...

$5 - $10 per student Ages 8 - 14 45 to 60 minutes
Operation Espionage

WGBH
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In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice. The...

$1 - $5 per group Ages 6 - 11 45 to 60 minutes

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Chemical
- sodium bicarbonate (remove)
Informal Category
- Historical Reenactment (remove)
- Arts and Crafts (remove)
Age Range
- 8-11 years old (grades 3-5) (remove)
Resource Type
- Activity (remove)
Learning Time
- 45 to 60 minutes (remove)