Here is the first of four experiments to differentiate among unknown liquids by their behaviors and properties. Pupils observe how different liquids respond to being placed on plastic and paper, and they take notes about their observations for future reference. Because of surface tension, a variety of phenomena occur. Make sure to take a look at the entire book from which this instructional activity comes.

Concepts

liquids, surface tension

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Additional Tags

surface tension, liquids, science

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Pros

• As part of the mini unit, this serves as a strong first step
• Comes with an attractive and age-appropriate lab sheet
• Teacher support includes background information, expected results, and an assessment rubric

Cons

• None