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Penny Perfect Properties (Solid-Liquid Interactions)
| Content Provider | TeachEngineering: STEM curriculum for K-12 |
|---|---|
| Author | Herring, Courtney |
| Copyright Year | 2013 |
| Description | Students investigate the property dependence between liquid and solid interfaces and determine observable differences in how liquids react to different solid surfaces. They compare copper pennies and plastic "coins" as the two test surfaces. Students investigate the property dependence between liquid and solid interfaces and determine observable differences in how liquids react to different solid surfaces. They compare copper pennies and plastic "coins" as the two test surfaces. Using an eye dropper to deliver various fluids onto the surfaces, students determine the volume and mass of a liquid that can sit on the surface. They use rulers, scales, equations of volume and area, and other methods of approximation and observation, to make their own graphical interpretations of trends. They apply what they learned to design two super-surfaces (from provided surface treatment materials) that are capable of holding the most liquid by volume and by mass. Cost of materials is a parameter in their design decisions. |
| Language | English |
| Access Restriction | Open |
| Rights Holder | Regents of The University of Colorado Board of Regents, Washington State University |
| Subject Keyword | Science and Technology Interfacial Phenomena Optimize Hydrophobic Design Process Hydrophilic Copper Penny Surface Tension Engineering Design Process |
| Content Type | Text |
| Time Required | PT2H45M |
| Education Level | Class VII Class VIII Class IX Class X Class XI Class XII |
| Pedagogy | Experimental Activity |
| Resource Type | Hands-on |
| Subject | Technical |
