Discovery of Optical Activity
The earliest optically active substances were all inorganic like quartz, rock crystals and so on. Later crystals of potassium chlorate, potassium bromate and sodium periodate were also found to exhibit optical activity. However, when these crystalline inorganic and organic ..
Minerals
Minerals occurring in the living cells form components of various inorganic and organic substances. About 20 different elements form the essential nutrients for the cells. Minerals in the living system occur in two forms (i) compounds or (ii) ion..
Rules of Chemical Formula
Formula Writing and Nomenclature of Co-ordination Compounds - Rules for formula writing: 1) Formula of the cation must be written first followed by anion. 2) The Co-ordination sphere is written in square brackets. 3) Within the co-ordination sphere the sequence is (Metal atom, a..
Organic Chemistry Introduction
Introduction - Organic chemistry is that branch of chemistry which deals with the study of compounds of carbon with hydrogen (hydrocarbons), and their derivatives. Presently about five million organic compounds are known. Since the synthesis of urea from ammonium thiocyanate, ma..
Mechanism of Taste Reception
The taste buds are stimulated by certain ions and compounds present in the food. Cations like Na + present in the inorganic salts evoke the salty taste and those like H + present in the acids evoke a sour taste. Organic compounds like sugars, dextrins, glycerol..
Water an unusual Liquid
Water is the most common substance on the earth's surface. Water has interesting structure and this accounts for its many unusual properties. One of the most important of these is its ability to dissolve a variety of compounds. It dissolves ionic compounds, many polar inor..
Water Pollution (Continued)
Inorganic Chemicals and Metals Industrial and municipal waste waters and mine run offs cause various metals and metallic compounds to be released into water. These pollutants also enter the water bodies as acid rain and their sulphate and nitrate ions make water aci..
Prefixes:
nitro ..
nitro ..Chlorine
The chief uses of chlorine are: 1. Production of organic compounds like polyvinyl chloride, chlorinated hydrocarbons, pharmaceuticals, herbicides, pesticides etc. 2. Bleaches the paper pulp and textiles, disinfectant for sterilizing drinking water. 3. Production of inorganic ..
Physical Properties
Acetic acid is a colorless, corrosive liquid with a pungent smell at ordinary temperatures. But below 290K, it solidifies to an icy mass called glacial acetic acid. It boils at 391K and its specific gravity is 1.08 at 273K. It is miscible with water, alcohol and ether in all ratios. It is a good s..
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