Kartik R. Patel, Dhrubo Jyoti Sen
The word ‘colour’ originates from chemistry. The seven different colours V: Violet, I: Indigo, B: Blue, G: Green, Y: Yellow, O: Orange and R: Red unite to form a single colour which is totally white and fragmentation of this white colour through prism again gives the spectrum of seven colours having different wavelength ($) which is in visible range (400-750nm). The colourful chemistry plays a role within the visible range in small scale to large scale. There is not a single element in the world, which is free from chemistry. This is embedded throughout the world in high extent. Either it is biochemistry or photochemistry or physical chemistry or organic chemistry or bioorganic chemistry or inorganic chemistry or analytical chemistry or combinatorial chemistry or environmental chemistry or computational chemistry or supramolecular chemistry or nanochemistry, each and everything is related with chemical science. Even physics is also based on the properties of matter, which also plays the role of chemistry: light, magnetism, electricity all are enlightened with the electronic behavior of the elements of periodic table. Light is free energy of photons, which is the multiplication of h (h: Max Plank’s constant and : Wave number) this can do the phosphorescence and fluorescence. It can also do the photolysis as well as photosynthesis, the destructive as well as creative matters! Material chemistry is build up by the chemical bonding between the elements of the building block. This bonding could be broken by the chemical reaction to form some another compound by four parameters: reactants, reagents, +ve or _ve heat and time. This can be done in laboratory and in environment also. There are huge number of chemical compounds in the world which are used as fine chemicals, reagents, drugs, pharmaceuticals, biochemicals, dyes, petrochemicals, pesticides, explosives, household appliances, domestic purpose, metallurgy and so many things. This chemistry is used as in nano to micro scale and in macro to mega scale but the chemical entity for a specific unit is same and joined by catenation property in which only three major bonding are there: ionic, covalent and coordinate bonds. Biomolecules under this heading is a big chapter under the receptor chemistry, enzyme chemistry, peptide chemistry, hormone chemistry, carbohydrate chemistry, lipid chemistry, vitamins all are chemical entity have definite functional activity in the living beings. The macro unit of chemical substance is based on the micro unit and the infrastructure is build up by elements of periodic table for inorganic chemistry and organic chemistry. A creation of God is a mega unit of genome (macro unit of chromosome which is a micro unit of polypeptides) can enjoy the chemistry in life to a full extent and especially for human who can play with chemistry from micro level to macro level. So we cannot forget the existence of chemistry in our life because this is an endless journey with full of mystery as this is the history of chemistry.
