Summary Do two activities from the selection, to show chemical reactions. Science content Chemistry: Atoms, Molecules (3-7) Chemistry: Chemical Changes (2, 7) Activities in this lesson Baking powder chemistry Cheese Soda drink Hydrogen peroxide chemistry Elephant's toothpaste Procedure Pair two activities for a lesson. Include molecule models for older primaries and up. Grades taught Gr K Gr 1 Gr 2 Gr 3 Gr 4 Gr 5 Gr 6 Gr 7
