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Showing results 1 to 9 of 9
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Invisible Ink Demonstration
Source Institutions
In this chemistry demonstration, learners will discover that phenolphthalein is a chemical that displays different colors depending on the acidity or basicity of the environment.
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Separating with Chromatography
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In this experiment, learners separate different types of molecules in marker inks (using a technique called "thin layer chromatography").
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Chromatography
Source Institutions
In this activity, explore chromatography and the various colors that make up the ink in markers. Use this activity to investigate cohesion and adhesion.
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Mirror Messages
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In this activity, learners use mirrors to write secret messages to a friend. Use this activity to explore letters, optics, and/or symmetry.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-002-201.png?itok=hbjQM15I)
Whodunit?
Source Institutions
In this fascinating and fun experiment, learners use chemistry to identify a mystery powder and to solve a "crime," a process similar to that used by real forensic scientists.
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Operation Espionage
Source Institutions
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.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-004-612.png?itok=EkArGzwt)
Secret Goldenrod Messages
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In this activity, learners write invisible messages on goldenrod paper, and make the message appear and disappear using acids and bases.
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Periscope
Source Institutions
In this optics activity, learners build a spy tool to secretly view things over walls or around corners.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-298.jpg?itok=9ec61Ekt)
Plaster Casts
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In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay.