This How Can We Find Out What Is in Water? lesson plan also includes:
Using paper chromatography, water watchers discover that several substances might be dissolved even though they aren't visible. In this case, you will prepare a mixture of three different food colorings for them to experiment with. A brief discussion follows. This lesson is part of a unit on the properties and the conservation of water, but stands alone well as a lesson on separating mixtures for a physical science class.
- Cross-curricular extensions, including an art activity
- Lesson is one in a series of wonderful water lessons
- Very visual activity
- A video by the publisher provides teaching tips