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Showing posts from June, 2021

Water - The soul of LIFE...

    Water is known as the strangest chemical. It is a chemical substance formed of elements hydrogen and oxygen, which exists in all three states (solid, liquid and gas). It is tasteless and odorless. Since water is readily convertible into vapour (gas), it can travel through the atmosphere from the oceans to the mainland where it condenses and nourishes life.                    Each water molecule is composed of two hydrogen atoms, each linked by a single chemical bond to an oxygen atom. One of the most important chemical properties of water is that, it can exist as an acid and a base. There is 1.5 billion cubic kilometers of water on earth and thus, it covers 70% of our planet. Two-thirds of the human body is made up of water.                   When water freezes, it expands and decreases its density. Thus, a solid (ice) floats on its own liquid (water). Earth is the...