Students see how surface tension can enable light objects (paper clips, peppercorns) to float on an island of oil in water, and subsequently sink when the surface tension of the oil/water interface is reduced by the addition of a surfactant; such as ordinary dish soap.
Teacher-Designed Project-Based Units at the Middle Level
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18 Printable car payment calculator with trade in Forms and Templates - Fillable Samples in PDF, Word to Download
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