Recovering Salts from Seawater
Source: Exploring Our Fluid Earth, a product of the Curriculum Research & Development Group (CRDG), College of Education, University of Hawai'i
[01-Jan-2019] In this activity, heat is used to evaporate seawater in steps, revealing salt crystals that are left behind. Students will seperate the substances in the seawater and answer questions about the process and results.
Seawater, freshwater, 10ml graduated cylinder, 2 watch glasses, permanent marker, heat source (oven, sun, heat lamp or hot plate), oven mitts, baking sheet, balance, dissecting microscope, teaspoon, food-safe cups (optional) and toothpicks (optional).
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