when water freezes, it expands. Most elements contract when frozen.
After my opinion nitrogen hasn't any unusual and very specific properties.
Zeolites are a group of minerals. Their interesting and unusual atomic structure gives them some interesting properties that have become very useful in recent times, particularly in water purification.
Hydrogen bonding between water molecules is responsible for many of water's unusual physical properties, such as high surface tension, cohesion, and adhesion. This bonding is a result of the attraction between the partially positive hydrogen atoms of one water molecule and the partially negative oxygen atom of another water molecule.
Some unusual things about the capybara are:They are rodents. Though they are as large as a pig, they are rodentsThey mate under water which is unusual for any land animal
metal
High cohesionHigh adhesionHigh heat capacityBecomes less dense when frozenDissolves almost any polar substanceThere might be others but these are the 5 most essential and unusual ones.
Water is considered an unusual molecule because of its unique properties, such as high surface tension, high specific heat capacity, and solid form (ice) being less dense than its liquid form. These properties are due to hydrogen bonding between water molecules, which gives water its special characteristics and behavior unlike other liquids.
It is not a conductor.
Mostly from the fact that there is strong hydrogen bonding between the molecules. This, for instance, gives water much higher melting and boiling points than we'd otherwise expect for such small molecules.
I suppose it depends on what your comparing it to but there are some properties of water that are unique. The most well known one is that it's solid state is less dense than its liquid state. Therefore 100ml of water will freeze to be more than 100 cm3.
It is chemically inert gas
When it freezes, it floats.