Discover the properties of water-loving and water-hating surfaces. In the seventh installment of a nine-part series, scholars explore hydrophilic and hydrophobic surfaces by conducting an experiment. They observe surface coatings, investigate visibility, and observe anti-fogging properties.

Concepts

surface tension, hydrophilia, hydrophobia, water molecules, technology resources

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Instructional Ideas

• Have the class research different hydrophobic and hydrophilic surfaces and their commercial uses

Classroom Considerations

• Experiment requires several repellents, which may not be readily available in your lab
• Learners need knowledge of surface tension from previous lessons

Pros

• Includes reproducible worksheets
• Teacher resource lists some safety issues to share with lab participants

Cons

• None