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Learners build a filter from old soda bottles and dirt. They create polluted water, and pour it through their filter to clean it.

In this chemistry activity, learners use thin layer chromatography to determine the molecular composition of different markers.

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

In this activity, learners build models of atoms and molecules, then consider their role in different phases of matter, density, and mixtures and solutions.

Learners design their own experiment to investigate how pollution diffuses through ground material.

This lesson gives full instructions for making cabbage juice indicator, a procedure sheet for learners to record observations as they use the indicator to test materials, and extension activities to d

In this challenge, learners figure out how to make a juice stain disappear.

In this activity, learners mix several sugar solutions to investigate the property of density. Each sugar solution has a different density and color of the rainbow.

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