The conversation between human and AI assistant.
Why is ice lighter than water?
Interesting. On a related note, why do some liquids like mercury and sulfuric acid have higher densities than water?
Excellent question! The density of a liquid is determined by the weight of its molecules and the spaces between them. Heavier molecules and closer packing increase the density of a liquid. Mercury and sulfuric acid are both denser than water because their molecules are heavier and they pack more closely together.