Why Does Ice Float On Water ?

Water is unusual. Most substances expand as they heat up, and get smaller as they cool down.  When water cools down to 4 degrees celsius, it behaves in the same way as other substances and contracts (gets smaller.) But below 4 degrees, the opposite happens - as water gets really cold and freezes into ice, it expands again. This means that the molecules in a cube of ice are less densely packed than the molecules in the same volume of water. Therefore ice is less heavy than water and floats on top of it. This is the same no matter how much ice and water you have.

This is described in much more detail at

www.madscience.org. It seems a lot of people ask this question!

Ice float in the surface of the water its because of the molecular structure of the water which is v-shape that will create a strong repulsive force towards the other i8ce cubes,another thing is ice cubes are less dense compare to the liquid form,because the crystal lattice between the water molecules are tightly packed to each other that can create a less dense property.

Ice is a solid. When the temperature is cold enough, liquid 'water becomes solid ice. Water expands greatly when it freezes. Ten !intercrop water make about 11 liters of solid ice. Objects in water float or sink acaccording to' a principle that was first discovered by Archimedes, a Greek mathematician who lived in the third century B.C. This law, known as "Archimedes' Principle", states that any object placed in liquid is buoyed up or held up by a force equal to the weight of the liquid displaced.

Wood is one-half as heavy as water, therefore one-half its volume of water will hold it up. Cork is one-fifth as heavy as water. Tee is about nine-tenths as heavy. This is why about nine-tenths of an iceberg is under water and an iceberg may really be much larger than we think it is when we see it.
»
Ice near the freezing point may be melted by adding pressure, but it refreezes quickly when the pressure is released. When you squeeze a snowball, you melt some of the ice crystals but they freeze again to make a hard ball when you stop squeezing.
Because water expands greatly when it freezes, a great force is put forth when ice is formed. Rocks are often split by water freezing in tiny cracks or crevices. This is important in the slow breaking down of mountains. In fact/in the quarries of Finland, workmen split great blocks of rock by filling cracks in the rock with water and allowing it to freeze.

Ice is around 9% less dense than water

Dear! Density of ice cube is much smaller then the density of melt water so ice cube can float on water