Water H2O 
Water (H2O); Origin of
Life
By
Mohammad
Kamruzzamil Mojumder
Contents
Profile of water Physical properties of water
Chemical
aspects
Chemical properties Reactions of water
Importance in daily life
Aspects as an energy resource Profile
Water is a liquid at standard ambient temperature and pressure but it often coexists on earth with its solid state, Ice and gaseous state ,steam
(water vapor). It is a polar solvent but generally a weak electrical conductor and 65% of Human body weight is water.
Water is a hydrated oxide consists of two elements,
Hydrogen and Oxygen.
It is non-toxic and under normal temperature and pressure is colourless, odourless and transparent liquid which is regarded as the source of human life
It is the most common substance of our planet and not only it is essential for human survival but also an important part of the organism.
Sources of water
Natural sources
( rivers, lakes, sea water, ground water, atmospheric water, etc.) Artifial sources
( chemically produced by the reaction of Hydrogen and Oxygen atoms)
Physical properties boiling point: 1000c
Freezing point: 0oc
The specific heat capacity:
4.186 KJ/Kg.oc
Triple
point:
0.01oc
Density:
1000 kgm3
(4oc)
Heavy water is a form of water containing a higherthan-normal proportion of the hydrogen isotope deuterium either as deuterium oxide, D2O or
²H2O, or as deuterium
Hard water is water that has high mineral content (in contrast with "soft water").
Hard water is formed when water percolates through deposits of calcium and magnesium-containing minerals such as limestone, chalk and dolomite.
Chemical formula and structure Water has a simple
molecular structure.
It is composed of one oxygen atom and two hydrogen atoms. Each hydrogen atom is covalently bonded to the oxygen via a shared pair of electrons. Oxygen also has two unshared pairs of electrons. Thus there are 4 pairs of electrons surrounding the oxygen atom, two pairs involved in covalent bonds with hydrogen, and
Life
By
Mohammad
Kamruzzamil Mojumder
Contents
Profile of water Physical properties of water
Chemical
aspects
Chemical properties Reactions of water
Importance in daily life
Aspects as an energy resource Profile
Water is a liquid at standard ambient temperature and pressure but it often coexists on earth with its solid state, Ice and gaseous state ,steam
(water vapor). It is a polar solvent but generally a weak electrical conductor and 65% of Human body weight is water.
Water is a hydrated oxide consists of two elements,
Hydrogen and Oxygen.
It is non-toxic and under normal temperature and pressure is colourless, odourless and transparent liquid which is regarded as the source of human life
It is the most common substance of our planet and not only it is essential for human survival but also an important part of the organism.
Sources of water
Natural sources
( rivers, lakes, sea water, ground water, atmospheric water, etc.) Artifial sources
( chemically produced by the reaction of Hydrogen and Oxygen atoms)
Physical properties boiling point: 1000c
Freezing point: 0oc
The specific heat capacity:
4.186 KJ/Kg.oc
Triple
point:
0.01oc
Density:
1000 kgm3
(4oc)
Heavy water is a form of water containing a higherthan-normal proportion of the hydrogen isotope deuterium either as deuterium oxide, D2O or
²H2O, or as deuterium
Hard water is water that has high mineral content (in contrast with "soft water").
Hard water is formed when water percolates through deposits of calcium and magnesium-containing minerals such as limestone, chalk and dolomite.
Chemical formula and structure Water has a simple
molecular structure.
It is composed of one oxygen atom and two hydrogen atoms. Each hydrogen atom is covalently bonded to the oxygen via a shared pair of electrons. Oxygen also has two unshared pairs of electrons. Thus there are 4 pairs of electrons surrounding the oxygen atom, two pairs involved in covalent bonds with hydrogen, and