what is chemistry - Page 2

😆 - Same topic ghum firke kaise aah jaate hain?😆

Originally posted by: apparaohoare

Should I reply again. 😆

Originally posted by: Barnali

😆 sure bt this time bit more details. in yur usual style.

yes pls........... we are thursty to drink the knowledge dose.

😆

Originally posted by: Barnali

😆 sure bt this time bit more details. in yur usual style.

Chemistry, study of the composition, structure, properties, and interactions of matter. Chemistry arose from attempts by people to transform metals into gold beginning about ad 100, an effort that became known as alchemy (see Chemistry, History of). Modern chemistry was established in the late 18th century, as scientists began identifying and verifying through scientific experimentation the elemental processes and interactions that create the gases, liquids, and solids that compose our physical world. As the field of chemistry developed in the 19th and 20th centuries, chemists learned how to create new substances that have many important applications in our lives.

Everyday Applications of Chemistry Chemical reactions occur continuously in the atmosphere, in factories, in vehicles, in the environment, and in our bodies. In a chemical reaction, one or more kinds of matter is changed into a new kind—or several new kinds—of matter. A few common chemical reactions are shown here. Life as we know it could not exist without these processes: plants could not photosynthesize, cars could not move, pudding could not thicken, muscles could not burn energy, glue could not stick, and fire could not burn. Microsoft Corporation. All Rights Reserved.

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Much of chemistry can be described as taking substances apart and putting the parts together again in different ways. Using this approach, the chemical industry produces materials that are vital to the industrialized world. Resources such as coal, petroleum, ores, plants, the sea, and the air yield raw materials that are turned into metal alloys; detergents and dyes; paints, plastics, and polymers; medicines and artificial implants; perfumes and flavors; fertilizers, herbicides, and insecticides. Today, more synthetic detergent is used than soap; cotton and wool have been displaced from many uses by artificial fibers; and wood, metal, and glass are often replaced by plastics.

Chemistry is often called the central science, because its interests lie between those of physics (which focuses on single substances) and biology (which focuses on complicated life processes). A living organism is a complex chemical factory in which precisely regulated reactions occur between thousands of substances. Increased understanding of the chemical behavior of these substances has led to new ways to treat disease and has even made it possible to change the genetic makeup of an organism. For example, chemists have produced strains of food plants that are hardier than the parent strain.

Hi Barnali di, Was that detailed enough. 😆

meri gyan ki pyaas bhujh gai.... 🤓

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appa tht was too gud I mst say.Thanx for enlightening us.

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Good thing he explained.. i had forgotten what it meant..😆

Originally posted by: Barnali

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appa tht was too gud I mst say.Thanx for enlightening us.

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Originally posted by: adi_0112

Good thing he explained.. i had forgotten what it meant..😆

😆 I hope all read this and do not forget anymore😡 ek hi sawaal bar bar kyon poochte ho yaar

Originally posted by: jayc1234

😆 I hope all read this and do not forget anymore😡 ek hi sawaal bar bar kyon poochte ho yaar

Someone should send this to Leslie.. he'll never talk about using the whole stage again 😆

Shady bhai, u changed ur AV . 😊

shady.. why this Abhishek Bachan, instead of the cool Shady...