What is weird about water as it freezes?

Answer 1

Unique property of water is that of the three phases of this material - solid, liquid, and gas - the solid form is actually less dense than its liquid form. In other words - solid ice takes up more volume than liquid water. A chunk of ice will float in liquid water, somewhat counter-intuitive of what we learn about most other materials - as most others will contract at lower temperatures. This is due to the unique properties of the hydrogen bond and the resulting crystalline structure of ice.

Answer 2

Most liquids get smaller when they harden, but water expands when it freezes.

Answer 3

the solid form is less dense than the liquid form. hence floating icebergs.

Answer 4

Water expands as it freezes, unlike most substances which contract when they solidify. This expansion is why ice is less dense than liquid water, causing it to float.

Answer 5

it expands