This story represents a time span from ancient history to the present. In the ancient period, the chemistry was familiar with fewer people. Chemistry concerned with the substances of which matter is composed, the investigation of their properties & reactions, & the use of such reactions to form new substances; but many people of that period didn't know about this; many curious people wanted to know about chemistry and its work, they decided to investigate the chemistry & they did the same. Alchemy was an old name of chemistry. It was an ancient period. People of that period considered that chemistry works on different properties (colour, density, smell & so on), states (solid, liquid, gas) & reactions of matter or environmental substances. They started to learn more about the...
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