Add a little salt to your soil and see what happens. A video demonstration shows how soil with high and low sodium content interacts with water. A quick experiment demonstrates the properties of dispersion and the role sodium has in the dispersion of soil.

Concepts

soil, soil analysis, clay, solutions

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Additional Tags

science

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Instructional Ideas

• Ask learners to bring in samples of soil to analyze the sodium content using the methods in the video
• Have individuals brainstorm the implications of high and low sodium content in soils

Classroom Considerations

• Expects pupils to be familiar properties of solutions

• This video is hosted on YouTube

Pros

• Instructor makes connections between the soil properties and their implications
• Highlights key scientific concepts

Cons

• None