Jaden Gaddis Avila Chemistry 8 November 2015 Ytterbium Ytterbium is a rare element that has just recently be found. Marignac discovered it in 1850 in Ytterby, a small village in Sweden. There was noting really know about Ytterbium until the 1950s because the element was not in a very pure form; in fact when it was first found with the monazite sand, which only contains about 0.03% Ytterbium. Ytterbium is a very weird element, the metal changes with different pressures. When the metal is at its normal state it is a conductor, but when it reaches 14,000 atmospheres of pressure it turns into a semi-conductor. Sense ytterbium changes with pressure; it is used in many different technological devices. For example, many different skydivers, or …show more content…
Its atomic number is 70, and its atomic mass is 173.04, its symbol is Yb, its melting point is 1097k, and its boiling point is 1466k. There is nothing really known about ytterbium due to it weird, for example the ytterbium when it is just sitting there is reacts with the oxygen and forms a protective oxide layer around the ytterbium. With this protective layer that surrounds the Ytterbium preserves the element from the oxygen, which breaks down the element. Ytterbium is a very soft and very malleable metal. Ytterbium is not as rare as we think it is due to the fact that it is more common than tin, but we do not use ytterbium very often due to the fact that we don’t know very much about the element. How is Ytterbium used in today’s world, on the periodic table, what are its classification is a question many people have when they hear the word Ytterbium. We know now that Ytterbium is a rare element but is twice as common as tin. That Ytterbium is a weird element due to its chemistry with the different chemical reactions with oxygen and different pressure levels. That Ytterbium was discovered in Ytterby by a chemist named Merignac, and he didn’t know much about the element, as we don’t either till this
Ana-Mauríne Lara’s Erzulie’s Skirt positions the female body as the scene where lives are interconnected across history and as a dissertation of the human condition. Her protagonists, Micaela and Miriam, tell a story of love, struggle, and survival that echoes the historical significance of slavery and the Caribbean middle passage across time and space. Divided into several sections based on time and location, one particular period in Lara’s novel connects Micaela and Miriam’s experiences most closely with slavery as a whole. After a voyage across the Mona Strait as an attempt to escape from the conditions in the Dominican Republic, they find themselves captured, trapped in a brothel, and forced into prostitution. Many parallels can be drawn to interpret Lara’s use of the brothel as a metaphor for the slave ships used to travel across the original Middle Passage, including the comparable use of people as commodities, the specific imagery and language Lara uses, the historical narrative presented at the beginning of each section, and the larger themes in which identities were simultaneously stripped by oppression and also preserved within the context of community and spirituality.
Although some of the elements have been known for thousands of years, our understanding of many elements is still young. Mendeleev’s first Periodic Table contained only 63 elements, and about that many were discovered in the following 100 years. Just like countries, emperors, philosophers, and cities, elements have histories, too.“The Disappearing spoon” by Sam Kean, is a detailed history of the elements on the Periodic Table. Kean does a important job of telling every single element’s journey throughout the history of mankind: from the earliest times, when chemistry was intermingled with alchemy, to these days of modern chemistry. For example: Thallium is considered the deadliest element, pretending to be potassium to gain entry into our cells where it then breaks amino acid bonds within proteins. The CIA once developed a plan to poison Fidel Castro by dosing his socks with thallium-tainted
Strontium was discovered by Adair Crawford, an Irish chemist, in 1790 while studying the mineral witherite (BaCO3). When he mixed witherite with hydrochloric acid (HCl), he did not get the results he expected. He assumed that his sample of witherite was contaminated with an unknown mineral, a mineral he named strontianite (SrCO3). Strontium was first isolated by Sir Humphry Davy, an English chemist, in 1808 through the electrolysis of a mixture of strontium chloride (SrCl2) and mercuric oxide (HgO). Strontium reacts vigorously with water and quickly tarnishes in air, so it must be stored out of contact with air and water. Due to its extreme reactivity to air, this element always naturally occurs combined with other elements and compounds. Strontium is very
Edward Barry Dalton is the only member of the regiment to have been the subject of a previously published work. A short biography including a selection of the surgeon’s wartime official correspondence entitled Memorial of Edward B. Dalton M.D. was complied and published as a tribute by his brother John Call Dalton shortly after his death in 1872. (John Call Dalton, Memorial of Edward B. Dalton)
Molybdenum is not found in nature, and the compounds that can be found were, until the late 1700s confused with other elements, such as carbon and lead. In 1778 Carl Wilhelm Scheele discovered that molybdenum was separate from graphite and lead, and was able to isolate the oxide of the metal from molybdenite. Molybdenum was rarely used and stayed in the laboratory until the late 19th century. Plants and animals generally have molybdenum, present in very small amounts.
This element when becoming an isotope can become radioactive due to its high activity as a metal. In its natural state it is a soft metal and it has a shiny “ wax “ like silver/white color to it, it is so soft that a knife could cut through it without a problem.
Licking the toad? A phrase most have heard before but did you know that licking the toad referenced the hallucinogenic effect certain toads had once a person literately licked it. The cause of the hallucinogenic symptoms is bufotenine. This paper will define what bufotenine is, the history behind bufotenine, signs and symptoms of bufotenine use, and bufotenine addiction treatment.
George Crum is the inventor of the Potato Chip. George was born on July 15, 1822 and passed away on July 22, 1914. George did not attend colloege nor did he have very much of an education. George's mother was Native American and his father was African American.
Yonkers is one of the most under-appreciated places in New York. However, the place is absolutely amazing. The amazing residents of Yonkers are some of the kindest people in the world. Some residents have achieved success in some of the hardest musical genres in the world. Even those residents who have not produced especially popular music have been very successful within their specific genres. Yonkers is a musical paradise full of the kindest people in the world.
Mr. Cronstedt discovered nickel in a mineral called niccolite. He originally planned to extract copper from this new mineral but got none at all. This is why nickel, at first, was called "false copper". Instead, Cronstedt got a silvery-white metal, which was eventually used for other things.
Baba Yaga - The Wicked Witch of Slavic Folklore Baba Yaga is one of the most famous witches in Slavic myth and Russian folklore. Her origin is part of her mystery. The first written reference to Baba Yaga was in 1755 in Mikhail W. Lomonosov’s Russian Grammar, where she is listed amongst ancient figures from Slavic tradition. The indication is that the legend of Baba Yaga began in pre-Christian, pagan times where people were very superstitious and believed that their fates were not of their own making but at the mercy of other-worldly deities.
It is the only gem known to man that is made of a single element.
The Periodic Table of Elements is commonly used today when studying elements. This table’s history begins in ancient times when Greek scientists first started discovering different elements. Over the years, many different forms of the periodic table have been made which set the basis for the modern table we use today. This table includes over 100 elements and are arranged by groups and periods. Groups being vertical columns and periods being horizontal columns. With all of the research conducted over the years and the organization of this table, it is easy to use when needed.
Before this project I had never even heard of this element and I must’ve overlooked it dozens of times on the periodic table. Now I know so much about this element and I’m sure the information I gained from researching technetium will assist me in my future classes, quizzes, and tests. The first thing I learned about this element that fascinated me was that it is synthetically made, meaning it is a man-made element and doesn’t occur naturally on earth. However, just because it isn’t found on earth, doesn’t mean it can’t be found somewhere in our universes. During the course of my research I discovered that a small amount of technetium is found in the stars and this to me was quite astonishing. Another amazing fact that I learned from researching this element is that although it is highly toxic due to it’s high level of radioactivity, it can be used as a medical diagnostics to identify problems occurring in the organs in the human body. This amazed me because scientists must have had to find a way to control the element so that it wouldn’t harm the human body with is toxic radiation, and the fact that they did shows that even elements can be manipulated. I also found it fascinating that even before the element technetium was discovered, it was predicted by