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Oil and Water: Washing Up with Surfactants
| Content Provider | TeachEngineering: STEM curriculum for K-12 |
|---|---|
| Author | DuPont, Samuel Cates, Ryan |
| Copyright Year | 2013 |
| Description | In a very hands-on activity, students observe and feel the differences between two cleaning methods, with and without hand soap, using coffee grounds to represent "dirt." In a very hands-on activity, students observe and feel the differences between two cleaning methods, with and without hand soap, using coffee grounds to represent "dirt." Most of the dirt and bacteria on our hands is encased in a thin layer of oil, so because of the properties of oil and water, cleaning your hands with water alone has little effect when trying to remove the dirt. This activity demonstrates the importance of using a surfactant, such as hand soap, when washing your hands. |
| Language | English |
| Access Restriction | Open |
| Rights Holder | College of Engineering, University of South Florida Regents of The University of Colorado |
| Subject Keyword | Chemistry Physical Science Science and Technology Cleaning Washing Hands Oil and Water Surface Tension Chemical Engineering Surfactant |
| Content Type | Text |
| Time Required | PT30M |
| Education Level | Class IV Class V Class VI Class VII Class VIII |
| Pedagogy | Experimental Activity |
| Resource Type | Hands-on |
| Subject | Physics Chemistry Technical |
