the temperature of ice is lower than the temperature of water. the temperature of water and ice are the same. the density of ice is less than the density of water. the density of ice is greater than the density of water?

When water freezes, water molecules form a crystalline structure maintained by hydrogen bonding. Solid water, or ice, is less dense than liquid water. Ice is less dense than water because the orientation of hydrogen bonds causes molecules to push farther apart, which lowers the density.

a is the correct answer