- Rainbow Milk Experiment: Place milk in a shallow dish, add drops of food coloring, then touch the surface with a cotton swab dipped in dish soap. The soap breaks the surface tension, causing the colors to swirl dramatically.
- Dancing Raisins: Drop raisins into a glass of clear soda. The carbon dioxide bubbles attach to the raisins, making them float up; when the bubbles pop at the surface, the raisins sink again, creating a “dancing” effect.
- Color Mixing with Water and Paper Towels: Arrange cups in a circle, fill alternating ones with colored water, and connect them with paper towel strips. Capillary action will draw the water up and across, mixing colors where they meet.
- Walking Water Experiment: Similar to color mixing, but using three cups — two with colored water and one empty in the middle. Paper towels bridge the cups, and water “walks” into the middle cup, blending the colors.
- Flower Color Changing: Place white carnations in cups of water dyed with food coloring. Over time, the flowers absorb the colored water through their stems, changing the petals’ color via capillary action.
- Baking Soda and Vinegar Volcano: Mix baking soda and vinegar in a container (add food coloring for effect). The acid-base reaction produces carbon dioxide gas, creating a foamy “eruption” that simulates a volcano.
Parent Tip: Review the logic above to help your child master the concept of science for kindergarten.
