Water Rolls Off a Waxy Leaf

Drops bead and roll differently. Ask students to predict what will happen. Place drops on waxy and non-waxy leaves. Key idea: Waxy coatings repel water and change surface adhesion. Ask: How might a waxy surface help a plant? Safety and cleanup: Use non-toxic plant material; wash hands. https://www.google.com/search?q=%22Water%20Rolls%20Off%20a%20Waxy%20Leaf%22%20science%20demonstration%20experiment