Question

Why does frozen water float?

a. constant movement of the water keeps the ice afloat
b. surface tension prevents the ice from sinking
c. frozen water has a lower density than liquid water
d. air currents keep the ice on the surface

Answer 1

C. Uniquely, water is less dense in its solid form (ice) than its liquid form due to the shape of the intermolecular bonds between H2O molecules.