First Graders Learn About Liquids and Solids

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First graders are  learning about liquids and solids in science class.  Recently, students mixed  oil and water and used alka seltzer to see a reaction with the oil and water.  "The alka seltzer pushed the green water up into the oil and then the heavier water sank back down," explained Mr. Knight. "We learned how liquids can make layers."