4th question answer

4. Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why.

Dear student,

Though ice is solid, it has a large number of empty spaces between its particles. These spaces are larger as compared to the spaces present between the particles of water, giving ice a cage-like structure. Thus, due to the empty spaces, the volume of ice is greater than the same mass of water. Hence, the density (mass per unit volume) of ice is less than that of water. A substance with lower density than water floats on the surface of the water. Therefore, ice floats on water.

Regards