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In this experiment, learners separate different types of molecules in marker inks (using a technique called "thin layer chromatography").

In this hands-on activity (on page 2 of the PDF), learners experiment with lemon juice and paper to create a message that can only be revealed using chemistry.

Learners write an invisible message using lemon juice on a piece of paper. They then develop the message by soaking the paper in a dilute iodine solution.

In this activity, learners combine two substances (plaster of Paris and water) to make a cast of an object's imprint in clay.