The History Of Chemistry Essay

1581 words - 7 pages

The History of Chemistry

Chemistry is the science of the composition and structure of materials and of the changes that materials undergo. It is also used in improving standards of living, making it possible for such substances as rubber, nylon, and plastics to be made from completely different materials. New materials and new properties of old materials are always being discovered. Some earlier products discovered from chemical reactions are ceramics, glass, and metals. Dyes and medicines were other early products obtained from natural substances. Some practical applications that chemistry is used for are to make stronger metals, improve soil, and the developments of live-saving ...view middle of the document...

They did know that iron could be made from certain rock and that bronze was a mixture of copper and tin.
From the beginning of the Christian Era to the 17th and 18th centuries was the period of chemistry known as alchemy. Alchemists believed that metals could be changed into gold with the help of a mystical stone which was never found. They did, however, discover many new elements and compounds. Paracelsus, a talented Swiss alchemist, decided that alchemy should be for helping to cure the sick instead of searching for gold. The main elements that he used were salt, sulfur, and mercury, all which are connected to "elixir." This period of practicing medicine was known as iatrochemistry, which is the study of medicine with chemistry applied.
One of the first real scientific chemist was Robert Boyle. In 1661, he helped to find the Royal Society of England, a scientific society. For about two centuries after Boyle, scientists started making useful discoveries, even though, they were far from understanding the true nature of matter or knowing what happens in chemical reactions. One of the most confusing events of this time period was the theory of burning, or combustion, called the phlogiston theory. According to this theory, a yellowness or hardness was supposed to escape from substances during the burning process. By now, chemists were starting to learn that they must test these theories with experiments. In 1774, Joseph Priestley discovered that a certain gas, now known as oxygen, was required in the burning process. A few years earlier, Henry Cavendish had discovered hydrogen and Antoine Lavoisier used the findings to formulate the presently accepted theory of combustion. This is often said to have marked the beginning of modern chemistry.
In chemistry experiments must be run to prove hypothesizes that a chemist has stated. In an experiment you must make observations under circumstances in which variables can be controlled in a way that the results can be transcribed and rational conclusions can be obtained. After an experiment has been carried out, a chemist can state a theory which is a tested explanation of a natural occurrence.
Based on scientific principles, Chemistry didn't evolve until the latter part of the 18th century. Chemists started to measure exactly what the substances were in their experiments. In 1805, John Dalton's atomic theory helped to advance modern chemistry. This theory stated that all matter is made up of small particles called atoms and that chemical changes take place between these atoms and groups of atoms. Soon after, Joseph Proust came out with the law of definite proportions and Joseph Gay-Lussac brought forth the law of definite proportions. Amedeo Avogadro also came out with the hypothesis, a planned explanation of a regularity in nature, that can be stated in modern terms: Equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules....

Other Essays Like The History Of Chemistry

History Of The Computer Essay

1233 words - 5 pages History of the Computer The history of the computer can be dated back for years and years and there is still much more to learn and know as we advance our knowledge with this technology. Webster's Dictionary defines computer as, “any programmable electronic device that can store, retrieve, and process data” (A brief 2004). The core word compute in computer has been termed for over 2000 years. In the beginning, a wooden rack holding

The History of Disease Essay

880 words - 4 pages Running Head: The History of Disease The History of Disease   Disease has dated back sense the beginning of time and is one of the leading factors that have wiped out several civilizations. Diseases are abnormal changes or symptoms that occur in the body. Diseases are closely related to homeostasis because during homeostasis the body is trying to remain stable; but the disease will not allow it. In addition, disease goes hand in hand with

The History of Theatre

1630 words - 7 pages The History of Theatre Alanna Leon Effective Essay Writing/COM/150 May 27, 2012 Michael Macbride The History of Theatre Theatre is a fantastic, entertaining, and very old art form. An evolution of storytelling, theatre is an expression of life. The history of theatre can be traced all the way back to the time of Ancient Greece. The art of theatre has survived many years and has evolved greatly during those years. A performance you

The History Of Medicare

1329 words - 6 pages pressure for it. The social security bill had run in to problems in Congress. The President himself decided to postpone action because he felt the country want ready. The signing of the Social Security Act in 1935 was a milestone in history. The Social Security Board would be involved in developing social insurance legislation. The federal government completed the National Health Survey in 1936. The poor got sick 47% more for acute illness and 87

The History of Terrorism

2038 words - 9 pages The History of Terrorism This comprehensive description for the history of terrorism analysis provides insight into the French and Russian revolutions expanding the terrorism knowledge to the Irish revolutionaries for political changes. The change of faces in terrorism activities shows as the left wing extremists slowly faded away with the collapse of the communism. The modern right wing extremist have an old history of using religious aspects

The History of Police

835 words - 4 pages The History of Police Andrea Cole CJA/214 June 30.2104 Kimberly Rieson The History of Police Industrialization and the large population in urban areas in the 17th and 18th century made it hard to maintain law and order in England and some major cities in America. Policing during that time consisted of volunteers from the community, also the night watchman and constables were employed but only on a part-time basis. These men had little

The History Of Baseball

1748 words - 7 pages The History of Baseball Deeply embedded in the folklore of American sports is the story of baseball's supposed invention by a young West Point cadet, Abner Doubleday, in the summer of 1839 at the village of Cooperstown, New York. Because of the numerous types of baseball, or rather games similar to it, the origin of the game has been disputed for decades by sports historians all over the world. In 1839, in Cooperstown, New York, Doubleday

History of the Holocaust

1258 words - 6 pages Law of Moses; spoke both Hebrew and Aramaic, which were the languages of his people at that time in history. Jesus preached about the kingdom of God. Helping the sick and forgiving the wicked, he came to have a huge following. In fact, he was believed to be the Messiah by many Jews at the time. For a long time after Jesus’ death many of the Jews that believed him the Messiah prayed and worshiped along side their mainstream brethrens. However, this

The History of Banking

862 words - 4 pages HISTORY OF BANKING Greek and Roman financiers: from the 4th century BC Banking activities in Greece are more varied and sophisticated than in any previous society. Private entrepreneurs, as well as temples and public bodies, now undertake financial transactions. They take deposits, make loans, change money from one currency to another and test coins for weight and purity. They even engage in book transactions. Moneylenders can be found

History Of The Internet

896 words - 4 pages History of The Internet The Internet is a worldwide connection of thousands of computer networks. All of them speak the same language, TCP/IP, the standard protocol. The Internet allows people with access to these networks to share information and knowledge. Resources available on the Internet are chat groups, e-mail, newsgroups, file transfers, and the World Wide Web. The Internet has no centralized authority and it is uncensored. The

The History Of The Airship

1221 words - 5 pages The History of The Airship Airships. In the early years of War, these beasts were known for their majestic presence in the sky and were icons of a country's power and prestige. They reigned mostly as reconnaissance and transport utility aircraft but there was something about this "lighter-than-air" ship that made it far more than a mere utility workhorse. In this essay, I will discuss the ever-popular and ever- living king of the

Related Papers

Illegal Drug Market Explains The Chemistry,Effects, History, And Uses Of Drugs Like Halocinogens, Amphetamines, Etc

2213 words - 9 pages , distorting the what users see and hear things. Depressants are drugs which also act on the central nervous system, but inserted they slow down brain activity. And lastly is analgesics which are drugs that have a painkilling effect and also create feelings of warmth and contentment. The problem with drug is that to get these effects, there are harsh chemicals involved which are anything but healthy. The chemicals in drugs alter the chemistry of

Chemistry Study Notes The Periodic Table And What Its Classification Of Elements Tells Us

795 words - 4 pages Periodic Table HistoryJohn Newlands – arranged elements by increasing atomic mass where their properties repeasted every eight element-Mendeleev arranged the elements in order of increasing atomic mass with columns with similar properties (created first periodic table)-also predicted the existence and properties of undiscovered elements & left blank spaces in the table where he thought the undiscovered elements would go-Mosley arranged

The Objectivity Of History Essay

1323 words - 6 pages The Objectivity of History The issues that are raised in this source by Marc Trachtenberg are is whether or not objectivity is still a relevant idea, and if it is not then is history in fact dying. Keith Jenkins' "What is History?," Carl Becker's "What are Historical Facts?" and Richard Evans' "In Defence of History" will be used to discuss and examine these issues. Marc Trachtenberg is questioning if objectivity is possible and desirable

The Study Of History Essay

740 words - 3 pages 48.The study of history places too much emphasis on individuals. The most significant events and trends in history were made possible not by the famous few, but by groups of people whose identities have long been forgotten History literally means the study of past. It gives us details of the past, earlier civilizations, their trends, belief, activities as well as their achievements and failures which help us in understanding their culture