M&M Color Diffusion

Colored bands spread without stirring. Ask students to predict what will happen. Arrange candies, add shallow water, and wait briefly. Key idea: Sugar/coloring dissolve and diffuse outward through the water. Ask: Why do the colors move on their own? Safety and cleanup: No eating after demo. https://www.google.com/search?q=%22M%26M+Color+Diffusion%22+science+demonstration+experiment