Students will explore the concepts of density and solubility as they watch raisins “dance” in a glass of soda water or pop.
What makes the raisins “dance” or causes them to sink and float? In this activity, students observe as bubbles form in a carbonated liquid. The bubbles cling to each raisin because of its textured surface, lowering the density of the raisin and air bubbles together until the raisin floats to the surface. As the bubbles pop and reform, the raisins “jump” and “dance” in the glass.