Why the density of water is highest at 4 degree celsius?
The hydrogen bonds in water keep on forming and
breaking.Due to hydrogen bonding, gaps are introduced in the structure of water
and various structural units are formed.As the temperature is raised from 0
degrees Celsius, more hydrogen bonds break than form and thus the structural
units collapse.This results in the filling of gaps in the water by smaller
structural units or molecules which in turn increases the density of water.As
the temperature is further increased the smaller structural units and molecules
acquire speed and move faster which causes water to expand and thus reduce the
density of water.Below 4 degrees Celsius the effect of breaking of hydrogen
bonds overcomes the increased speed of the smaller structural units and
molecules and thus the density of water increases till 4 degrees celcius.But
after this temperature the speed of units and molecules overcome the effect of
breaking hydrogen bonds and thus density of water is decreased.Hence, water has
a maximum density at 4 degrees Celsius.
Why is drinking water important for humans? The human body is made up of 80% water, which is present in blood and cells.Since we lose a ...
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