Sulfur belongs to the chalcogen family. Other members of the family are oxygen, selenium, tellurium, and polonium. These elements make up Group 16 (VIA) […]
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Compounds of Nitrogen
Nitrogen has 5 electrons in its valence shell. It has a valency of 3 with respect to hydrogen and a […]
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Nitrogen and it’s properties
Nitrogen, which makes up about 78% of our atmosphere, is a colorless, odorless, tasteless and chemically unreactive gas at room […]
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The Halogens
There are six elements in Group VIIA, the next-to-last column of the periodic table. As expected, these elements have certain […]
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Oxygen and it’s compound
Oxygen is the most abundant element on earth. It is found almost in everything in nature and also in free […]
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History of hydrogen
Hydrogen comes from Greek meaning “water producer” (“hydro” =water and “gennao”=to make). First isolated and identified as an element by Cavendish […]
https://www.youtube.com/embed/eJXL0IrbtqEEnergy is conserved in chemical reactions. One way of stating the ‘law of Conservation of Energy’ is to say the […]
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Mole concept
Since it is not possible to calculate the weight of particles individually, a collection of such particles called mole is […]
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Mass and volume relationship
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Solubility curve
Solubility curve: The solubility of a given solute in water, as done above, can be determined at many different temperatures, […]