Question

why does a layer of ice form on the surface of a pond during freezing weather? molecules of water in the solid phase are less dense than those in the liquid phase. molecules of water in the solid phase are more dense than those in the liquid phase. molecules of water in the liquid phase are less cohesive than those in the solid phase. molecules of water in the liquid phase are more cohesive than those in the solid phase.

Explanation:

Water is unique as its solid - ice - is less dense than liquid water. When water freezes, hydrogen bonds form a lattice structure that spaces the water molecules farther apart, making ice less dense. Less dense substances float on more dense ones, so ice forms on the surface of the pond.

Answer:

Molecules of water in the solid phase are less dense than those in the liquid phase.