Why does the density of water decrease when it turns into ice?

Water expands upon freezing due to the formation of an open hexagonal crystal structure, increasing volume and decreasing density. Related Questions: Two liquids A and B have densities of 1 g/mL and 1.2 g/mL, respectively. When both liquids are poured into a container, one liquid floats on top of the other. Which liquid is on … Read more