because the density of ice is lesser than that of water as water contracts on cooling
The molecules present in ice are arranged in cage like structure . So it has more intermolecular space than water. This makes it lighter(causes it to have less density). So ice floats on water.

Answers

2014-04-08T19:07:46+05:30
Objects float in denser mediums
Density of ice < density of water
So ice floats in water

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2014-04-08T19:07:53+05:30
Density of ice is less than water so it floats on water.
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