14. A certain element is listed as having 72.6 atomic mass units. It is probably true that it contains…
At least eight other researched physical and chemical properties of the element should be mentioned. These properties may include but are not limited to:…
This material is comprised of the chemical Aurum, known to be a dense, soft and ductile metal. This material alone serves little purpose other than the perceived value added by societies around the world. Being one of the materials most commonly used for trade, gold was introduced to the United States during 1793 gold was discovered in North Carolina. This discovery went with little attention for the public with gold still being an unknown material. Gold was later discovered at The Reed Farm in North Carolina 6 years later in 1799. This new discovery created public attention and a new sense of demand for the…
Name of Element: PromethiumOxidation Number(s): Stable at +3, sometimes works with a +2Electron Configuration: [Xe] 4f^5 6s^2Melting Point: 1373 KBoiling Point: 3273 KDensity: 7.23 g/cm^3Color of Element in its Standard Phase: A metallic silverState of Matter at Standard Temperature: SolidPhysical Properties:…
Before the discovery of gallium, its existence and properties were predicted by the Russian chemist Dmitri Mendeleev. He named the supposed element eka-aluminum as he predicted the element would be below aluminum in the periodic table of elements. In the year of 1875, the element Gallium was discovered by French chemist Paul E. Lecoq de Boisbaudran through a spectroscope in Paris. De Boisbaudran extracted gallium from a zinc blende ore from the Pyrenees and obtained .65 grams from 430 kilograms of ore. He isolated gallium by electrolysis of its hydroxide in potassium hydroxide solution. The origin of the name comes from the Latin word ‘Gallia’, which means France.…
Following this, an unknown pure organic compound, was taken and melted following the steps of Appendix A and using the “Mel-temp” apparatus. It’s melting point was noted to be 129.6-132 degrees Celcius. Based on the melting range found, the unknown substance was narrowed down to be one of two known pure compounds – Urea or trans-Cinnamic Acid. The unknown was then mixed with approximately equal amounts of each of the two likely known compounds and the mixture melting point of each was noted. The melting range of the mixture of the unknown and Urea was unchanged and the mixture of the unknown with trans-Cinnamic Acid dropped drastically to 95.7- 97.2 degrees Celcius.…
In terms of ascertaining the identity of the metals, I was capable of deducing a definite, possible identity for the golden metal, however, I could not provide a definite, possible identity for the silver metal. Conversely, the results of the experiment themselves, whether volume, mass, or density, proved insufficient in my attempts to distinguish the identities of the metals. Thus, during the experiment, I also observed the color of the metals, and used these observations in my assessment of the metals. The five trials for the golden metal produced an average density for all trials of 8.34 grams per cubic centimeter. [Processed Data Table: Density of the Golden Metal]. The golden metal itself, while referred to as golden during the experiment,…
My element is Mercury,the atomic number is 80 and the atomic mass is 200.59.The symbol is Hg.Mercury comes from the greek name hydrargyrum which means liquid silver.The element is also known as quicksilver for its mobility. Named after the fastest-moving planet in the solar system, mercury has been known to humanity for ages.despite its toxic qualities, mercury can still be useful to us. The element conducts electricity and is used in electrical switches of thermostats and certain types of doze alarm-type alarm clocks.It can turn into liquid at room tempurature.It boils at 656.11 F.…
Mercury, or quicksilver, is a shiny metal that is thirteen and a half times as heavy as an equal volume of water. Mercury is the only metal that is a liquid at room temperature. Hg is one of the rarest metals, however it is found in many homes-like thermometers. Also, Mercury was one of the first metal ever found. Mercury is named after a planet and has been recognized since ancient times. The Greeks named the element…
Gallium has several unique physical and chemical properties such as having a silvery color with a shiny surface and is soft enough to be cut with…
Gold is a filling option that many people picture when they think of filling material,…
Rubidium is an alkali metal in group IA of the periodic table with atomic number 37, an atomic weight of 85.47, and a density of 1.53 Mg/m3. Its melting point is 38.9 °C, and it boils at 688 °C. Its atomic radius is 0.248 nm and the (+1) ionic radius is 0.148 nm.…
Silver is a very ductile and malleable metal used for thousands of years utensils, for trade, and as the basis for many monetary systems. Its value as a precious metal was long considered second only to gold. In Ancient Egypt and Medieval Europe, it was often more valuable than gold.…
Alloying a metal is done by combining it with one or more other metals or non-metals that often enhances its properties. For example, steel is stronger than iron, its primary element. The physical properties, such as density, reactivity, Young's modulus, and electrical and thermal conductivity, of an alloy may not differ greatly from those of its elements, but engineering properties such as tensile strength and shear strength may be substantially different from those of the constituent materials. This is sometimes due to the sizes of the atoms in the alloy, since larger atoms exert a compressive force on neighboring atoms, and smaller atoms exert a tensile force on their neighbors, helping the alloy resist deformation. Sometimes alloys may exhibit marked differences in behavior even when small amounts of one element occur. For example, impurities in semi-conducting ferromagnetic alloys lead to different properties, as first predicted by White, Hogan, Suhl, Tian Abrie and Nakamura. Some alloys are made by melting and mixing two or more metals. Bronze, an alloy of copper and tin, was the first alloy discovered, during the prehistoric period now known as the bronze age; it was harder than pure copper and originally used to make tools and weapons, but was later superseded by metals and alloys with better properties. In later times bronze has been used for ornaments, bells, statues, and…
Economic and financial transactions among different countries require some sort of arrangement that could facilitate settlement of payments. These arrangements form the (basis) subject matter of the International Monetary system. IMS we find today is the result of a century – long evolution going back to the days of the gold standard and even earlier when costly metals…