Dispersion

We discussed dispersion today. We first poured milk into plates and dropped spots of food coloring into the milk. We observed that the food coloring did not disperse but stayed in colorful blobs in the milk. Then we dropped one drop of dish soap into our plates. Instantly the fat molecules in the milk dispersed allowing the water-based food color to move around the whole plate, mix with the other blobs of color and form ribbons and designs in our plates!