Water,well known undefined substance

Author: Nino Giorgadze
Keywords: water, structure, density, ice
Annotation:

Water is the most common, unique, simple and at the same time, the most difficult and mysterious substance on earth.There are numerous scientific works on water,but in spite of this,It is believed that he is not fully examined.Among all the substances on earth with its physical, chemical and quantum mechanical properties, water takes special situation in nature and the most important role in the existence of organic life.The water is very familiar to us, because it makes up the two thirds of the human body and covers the three quarters of the earth's surface, at the same time it is extremely unaware. Some of its features are still unexplained. Water origin,which covers nearly 70 percent of our earth still unknown to scientists.