Abstract
In this Activity, students collect soil samples and characterize them by examining their physical appearance, water-holding capacity, sedimentation, and pH. Based on their observations, they can see that different samples of something as universal as soil can be quite different from each other. This Activity complements the 2006 Chemists Celebrate Earth Day theme Dig It!. The Activity provides practice in making detailed observations about a real world substance students probably think little about.
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