Gently add one or two drops of red, blue, and yellow food coloring to the same spot ... The first time you touch the food coloring with detergent, the color should zoom to the edge of the plate. When ...

Place ¼ teaspoon of detergent and ¼ teaspoon of cream of tartar in their labeled cups. 1. Introduce the activity and guide the class in making a red cabbage indicator solution. Tell students that they ...