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This Investigating Contact Angle activity also includes:
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.
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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