Why does ice float on water as much as its very heavy?

Question: Why does ice float on water as much as its very heavy?
- Keywords:
  ice
Asked by 268ngrj1723 to Bernerd, Joseph, Ken, Peter on 14 Jul 2017. This question was also asked by 695ngrj1722.
- Joseph Olwendo answered on 14 Jul 2017:
  
  floating is a matter of density. anything less dense than water will float. so the simple reason is that ice is less dense than water. by how do we explain this? here is the answer: As water cools below 4°C, the hydrogen bonds adjust to hold the negatively charged oxygen atoms apart. This produces a crystal lattice, which is commonly known as ‘ice’. Ice floats because it is about 9% less dense than liquid water.
- Bernerd Fulanda answered on 14 Jul 2017:
  
  Dear Ngrj
  Water has a behavior which is said to be different from other materials; naturally as substances change from Solid, to liguid then to gas, the density decreases.
  However in the case of the water, due to the hydrogen-oxygen bonds, and the resulting lattice formed, the solid (ICE) is less dense compared to liquid water and therefore, it floats. Water is densiest in liquid state at 4 degrees centigrade
  Likewise as the water is warmed up and starts turning into gas (Water Vapour), the density again decreases and vapour lifts out of the water surface

Question: Why does ice float on water as much as its very heavy?