Question

as we the density of solid is more than liquid but why the density of water is more than ice

Answer 1

The reason for the lower density of ice vs. water (between 4 deg. C and 0 deg. C) is hydrogen bonding. Hydrogen bonding holds several water molecules together, but it can also lead to repulsion between water molecules that results in a greater distance being created between individual water molecules in a solid.

Hydrogen bonding is the primary cohesive force that holds water molecules together in liquid water. As you decrease the temperature, molecules of water start to pack closer together, until you reach 4 deg. C. At this point, molecules of water start to organize into a structure that ultimately freezes into a solid at 0 deg. C. This structure involves extensive hydrogen bonding that pushes out the packing of water molecules, thereby creating more void spaces (i.e. decreasing the density). This process results in a solid that has lower density than the corresponding liquid at 0 deg. C. Supercooled liquid water continues to exhibit higher density as compared to the corresponding solid water (ice) at temperatures below 0 deg. C.

Answer 2

Hello dear your answer



the ice structure takes up more volume than the liquid water molecules hence ice is less than than than liquid water.





Or your answer

this provides more space between the molecules In The crystal structure of ice.then the molecules of liquid water as a result ice is less dense than the liquid form.water is only known non metallic substance that expands when its freeze its density decrease and it expand approximately 9% by volume.




Thanks!!