Did you know that neon is a Greek word that means "new"? Neon is the element that I am most interested in. I chose to do neon because I found out what many uses it has in our daily life. Neon is the element that allows you to watch TV. Without neon we would never see the cool flashing signs outside of diners and bars. In my essay I am going to tell you about neon and its many uses.
First, I'm going to tell you about the history and uses of neon. Neon was discovered by Sir William Ramsay, a Scottish chemist, and Morris M. Travers, an English chemist, shortly after their discovery of the element krypton in 1898. Neon is one of the most amusing elements used today. Neon mixed with some other elements can make a bright light in an enclosed tube. This is mostly used in advertising signs (figure A) (A blue or green coloration in the discharge can be done by adding a little mercury to the neon in the discharge tube), but when used in a different mixture of molecules it can make the figures on your TV (figure B). Neon is also used in
High voltage indicators (figure C) and neon-helium laser pointers (figure D).
Now I?m going to give you the chemical breakdown of neon. Neon?s atomic number is #10. Neon has 10 protons, 10 neutrons, and 10 electrons. It belongs to the Noble Gas section of the periodic table. Its atomic mass is 20.1797. All the noble gases have the maximum number of electrons possible in their outer shell making them stable and un...
Glow sticks get their “glow” when two chemicals are mixed together because of a chemical reaction. The chemical reaction is called Chemiluminescence. A Typical glow stick has a plastic tube with a smaller inner tube inside. There are three components, two chemicals and a fluorescent dye which accepts the energy and helps covert to light. There is more than one way to make a glow stick, but the most common uses a solution of hydrogen peroxide and phenyl oxalate ester along with the fluorescent dye. The hydrogen peroxide is in its own compartment away from the other two components until ready to use. The fluorescent dye is what determines the subsequent color of the glow stick when the chemical solutions are combined.
Light sticks work in a similar way. When you “snap” a light stick, the chemical in the glass capsule mixes with a chemical in the plastic tube and creates light energy. Instead of the chemicals used by a firefly, other chemicals are used to create a glow. The light stick that you can buy at a store usually contains hydrogen peroxide, phenyl oxalate ester, and fluorescent dye (New York Times Company, 1 of 3). The light stick will glow the same color as the fluorescent dye placed in it. In luminescence, the chemical reaction “kicks an electron of an atom out of its ‘ground’ (lowest-energy) state into an ‘excited’ (higher-energy) state, then the electron give back the energy in the form of light so it can fall back to it’s ‘ground’ state (Fluorescent Mineral Society, 1 of 2).
Egypt has one of the longest histories of any nation in the world. Written history of Egypt dates back to about 5,000 years, the commencement of civilization. While there is divergence in relation to Early Egyptian times, it is said that Egypt came to be around 3200 B.C., during the reign of a king by the name of Menes and unified the northern and southern cities of Egypt into one government. In 1675 B.C., Egypt was invaded by the Hyksos, people from the east, bringing along the very first of chariots and horses ever to come across Egyptian soil. Approximately 175 years later in 1500 B.C., the Egyptians had gotten rid of the Hyksos and driven them out. In 1375 B.C., Amenhotep IV had become the king of Egypt. During his reign he eliminated the worship of Egyptian gods and initiated the idea of only worshipping one god. But after his death, his ideas were retired and old ways were reestablished. Egyptian supremacy then started to decline around 1000 B.C. Between 1000 B.C. and 332 B.C., Egypt was ruled by many such as the Libyans, Assyrians, Ethiopians, and Persians. In 640, Muslims conquered Egypt and founded the city of Cairo in 969 and deemed it as the capital of Egypt. For many centuries Egypt was ruled by Muslim caliphs. A prominent ruler of this period was Saladin, who battled the Christian Crusaders at the conclusion of the twelfth century. In 1798 Napoleon Bonaparte invaded Egypt but was then forced to withdraw in 1801 Turkish and British armed forces. In 1805 Mohamed Ali began ruling Egypt till 1848 and great changed the country in terms of modernization and its military. During Mohamed’s conquest, he borrowed a lot of money from the French and British, which later resulted in Egypt’s coloniza...
Lithium has an atomic number of 3, and an atomic weight of 6.94. In general, lithium is more stable than hydrogen, and slightly less stable than nitrogen, carbon, and oxygen. When looking at chemical ion properties, it is useful to consider three main characteristics: the size, or radius, of the ion, the charge, and the ion's electron affinity. Lithium has a similar charge to radius ratio to that of magnesium, which is in group IIA of the periodic table, and so chemists say that the two elements are "chemically similar.
The country I decided to research is Egypt. Egypt is located in northern Africa along the Mediterranean and Red Seas. The majority of the country however is located in northeastern Africa, but its Sinai Peninsula extends out into Southwest Asia, connecting the two continents. European nations wanted to colonize Egypt because it was considered to be a treasure, due to its fertile land and production of crops, such as: wheat, fruits, vegetables, corn, and cotton. Also because of its strategic location at the head of the Red Sea, that appeared valuable to countries such as Britain and France. Another reason was because they wanted to control Egypt in order to secure the main route to India, Malaya, Australia, New Zealand and to Hong Kong.This route was known as the Suez Canal. The Suez Canal was viewed as the “Lifeline of the Empire” because it allowed quicker access to its colonies in Asia and Africa. It also connected the Red Sea to the Mediterranean Sea, built mainly with French money from private interest groups using Egyptian labor. Egypt was also targeted due to its weak economy and government, making it an easy target to imperialize. Egypt was colonized three times each by different civilizations. It was colonized by the Ottomans in 1517, by the French in 1799, and by the British in 1882. A key person involved in Egypts colonization was Muhammad Ali. After taking power in 1805, he strengthened the army and focused on cultivating the land. He also increased trade with Europe and sent officials to Britain to be educated.
Many elements, like lead, are very important to the structure and formation of many of the products we use. Throughout history, lead has been developed, mined, extracted, and used. Lead, since its finding thousands of years ago, has proven to be a tricky element with many diverse health effects. Scientists have developed products, and processes that still continue to used lead. Lead is an extremely important and influential element in our daily lives.
How did imperialism manage to bring both disaster and success to Egypt? The morals of imperialism are mixed; it all depends on perspective. It brought along famines, heavy taxes, and many others to Egypt. On the other hand, it opened up trade routes from Britain to Asia and India, formed a steady supply of cotton for Britain, etc. (period6-5imperialism10.wikispaces.com, Egypt) In the beginning, Egypt actually tried to modernize itself, as an attempt to ward off European dominance (Modern World History, 354), but debts and other financial problems drove it into Britain’s arms. So how was Egypt affected by this? As a result of imperialism, Egypt received aid on some of the current problems, but were faced with many more new ones.
While all atoms of the same element have the same number of protons, it is possible for atoms of one element to have different numbers of neutrons. Atoms of the same element with different numbers of neutrons are called isotopes . For example, all atoms of the element carbon have 6 protons, but while most carbon atoms have 6 neutrons, some have 7 or 8. Isotopes are named by giving the name of the element followed by the sum of the neutrons and protons in the isotope's nucl...
Ancient Egypt is said to be one of the most successful of the ancient civilizations. This entire nation, based around the Nile river, was able to develop in areas such as mathematics, medicine, and astronomy that others so far hadn’t been able to do. They adapted to their environment and used the Nile river to their advantage, using it as a trading route, a means of protection from invaders, and a very successful system of irrigation system for their agriculture. The Unification of Upper and Lower Egypt (the Delta and Valley) is what started the evolution of the ancient Egyptian civilization. Being a united kingdom with a single, powerful ruler, allowed them to have a long and successful reign over the land,
In 1817, an aging Swedish chemist was pouring over his work on a late afternoon in Stockholm, Sweden. He was analyzing a strange ore named Petalite that had been procured from an island off the coast of Sweden called Utö. The ore Petalite (which is now recognized to be LiAl(Si2O5)2) had been discovered by a Brazilian scientist, José Bonifácio de Andrada e Silva towards the end of the 18th century on a visit to Sweden. This Swedish scientist, Johann August Arfvedson, detected traces of an unknown substance in his sample of Petalite. This was the first discovery of Lithium.
What is a good country? Is a good country a country with a cheerful population? Is a good country a country which controls more land than the next? Is a good country a country whose government and economic system has absolutely no problems? Or is a good country a country that has a delicate balance of benefits and problems. Well, we are here today to discuss the corruption of Egypt, a good country, by Britain, a huge and powerful country. Although Britain was not the first, Britain has retained control of Egypt for nearly 40 years and I am here today to ask for the freedom and decolonization of Egypt from Britain.
There have been many prosperous civilizations throughout the history of the world. Many of them became very large, and lasted for a countless number of years. The most successful and large scale civilization, however, was that of Ancient Egypt. Although it lies in the middle of the largest desert in the world, egyptians were able to use their intelligence to utilize the Nile River and cultivate the surrounding land for farming. They came up with very unique conceptual ideas that benefitted them greatly, and discovered many new things that would impact society around the world to this day. For all of these reasons and many more, Ancient Egypt was the most advanced civilization of its time.
This view is wrong. The best evidence we have suggests that the civilization of ancient Egypt was established in the main by indigenous Africans. This is not to say that there was no influence, biological or cultural, from Asia or Europe on Egypt, but any such influence was slight. The ancient Egyptians, biologically and culturally, were fundamentally Africans.
There were many ancient civilizations around the globe. One of the more well known civilizations in ancient Egypt. They have one of the richest histories of any empire in ancient times. Their achievements and religious beliefs have made them such an accomplished dynasty, but their pharaohs and policies are also known worldwide.
Throughout history, there were many great and everlasting civilizations. There was Ancient Greece with its advancements with math and science, or Ancient China with the invention of paper and uses for gunpowder, or countless other civilizations. But there is one who is at the top, Ancient Egypt. The Egyptian empire was one of the longest lasting empires in the world; lasting for over 3000 years. The Egyptians made great progress in the field of architecture, as well as math. They also had very advanced medical technology and procedures. By far Egypt had one of the biggest contribution to history.