pressures. That is, until now. Recently this year, hydrogen was changed into a metallic substance, which could conduct electricity. An experiment conducted by William J. Nellis et al. at the Lawrence Livermore National Laboratory accomplished this feat. Hydrogen was converted from a non-metallic liquid, into a liquid metal. The likelihood that the most abundant element in the universe could be converted into metallic form at sufficient pressures was first theorized in 19351, but tangible evidence
Metallic glass Metallic glass or amorphous metal is a metal that when melted will be cooled rapidly to disorganize the particles in an atomic scale. Due to the particles being stable yet unorganized, the metal or alloy this metal or alloy will send kinetic energy back to anything it hits making it bounce or proceed further and longer. Originally used for missiles and space discoveries, this metal is very flexible and is good for low temperature environments because of the disorganizations of particles
The Molten Core Theory The center of the Earth is composed of a solid metallic core surrounded by a molten layer of liquid metal. This paper will discuss the reasons to believe the theory that the Earth has a molten core, and the important discoveries that have led to this generally accepted theory. It is very reasonable to agree with this theory when paying credence to the logical evidence that answers questions about the Earth’s core. This evidence includes information about the elemental
to reduce into carbon monoxide. This reaction absorbs some heat and lowers the temperature of the upper part of the furnace to roughly 1300° C. CO2(g) + C(s) + heat ® 2CO(g) This carbon monoxide then reduces the iron oxide to a metallic iron, which is molten at the temperature of the reaction. This takes place in middle and upper parts of the furnace. 3CO(g) + Fe2O3(s) ® 2Fe(l) + 3CO2(g) The limestone in the charge is to remove any existing silica left in
Nickel is one of the most important elements on the periodic table. It has plenty of history, as well as a huge importance to society. Its has unique chemical, physical, and geological properties. Nickel is used commercially in abundance, as it is used anywhere from simple art products such as ceramics to complex structures such as tubing for desalination plants. It is even used in the American five-cent coin, the "nickel".Nickel was discovered by Axel Fredrik Cronstedt, in Sweden, during the year
Plutonium Plutonium is a radioactive metallic element. Although it is occasionally found in nature, mostly all of our plutonium is produced artificially in a lab. The official chemical symbol for plutonium is Pu, coming from its first and third letters. Its atomic number is ninety-four. Plutonium is able to maintain its solid state until very high temperatures, melting at six hundred and forty degrees Celsius, and boiling at three thousand four hundred and sixty degrees. The density of Plutonium
(anode). On reaching the electrodes, the ions may gain or lose electrons and be transformed into neutral atoms or molecules. The copper ions move to the cathode and are discharged by gaining electrons, and are deposited on the electrode as metallic copper, Equation Cu+2 + 2e- èCu (Reduction) The chloride ions move to the anode and are discharged, by losing electrons, as chlorine gas. Equation 2Cl-1è Cl-1 + 2e-(Oxidation ) [IMAGE] Here is a diagram to show the ions going to the
Aluminum, symbol Al, the most abundant metallic element in the earth's crust. The atomic number of aluminum is 13; the element is in group 13 (IIIa) of the periodic table. Hans Christian Orstead, Danish chemist, first isolated aluminum in 1825, using a chemical process involving potassium amalgam. Between 1827 and 1845, Friedrich Wöhler, a German chemist, improved Oersted's process by using metallic potassium. He was the first to measure the specific gravity of aluminum and show its lightness. In
and easily bent or twisted. It had a metallic surface and was brittle. It was silver in color. A flame from a Bunsen burner was held to the Mg, and it ignited, giving off a brilliant white light. Looking directly into the light resulted in temporary blindness, which would explain the warning on the procedures that strongly suggested not looking directly into the light. After the flame had extinguished itself due to lack of fuel, the Mg had turned from a metallic strip to an off-white powder, which
bacteria’s ability to ferment lactose. This test is accomplished by placing the bacteria on Eosin Methylene Blue agar. The agar is selective for gram negative bacteria and those bacteria that can ferment lactose will have colored growth, usually a metallic green sheen. The Sulfur Indole Motility agar tests for three separate characteristics; sulfur reduction, indole production, and motility. The SIM medium is a semisolid medium; this facilitates the motility test. The medium contains sulfur, if
Sodium (Na) Sodium has an atomic number of 11 and a mass of about 23g. It is a silvery white-metallic element classified under the alkali metals. Sodium has been known since early times and was used by the people of Mesopotamia and Egypt to make glasses. Sodium is the sixth most common element found on the earth. It is usually not found in nature but more often in compounds such as salt (NaCl). Sodium conducts heat and electricity easily. Without this element life could not exist. Each compound
Ceramics - Incredible Refractory Materials Introduction First we will start with the definition of refractories and ceramics. Refractories and ceramics are non-metallic materials capable of maintaining physical and chemical stability at high temperatures. Refractories in modern practice are usually ceramic in nature, and are used in a wide variety of primary, secondary and tertiary industries. Wherever an industrial process involves heat in excess of 700 to 800 degrees Fahrenheit (roughly), one
south-east to north-west. This part of the province was formed during Precambrian era and contains igneous and metamorphic rocks. From the minerals found in that part of the Shield the most abundant and the most important for Saskatchewan is the metallic mineral uranium that can be used for building the nuclear reactors or exported to the other countries. The rest of the province, except for the extreme southwest which is occupied by the Hills, is situated on the Saskatchewan Plain which is a
Contradictory Impulses in Chopin’s The Awakening “Edna Pontellier could not have told why, wishing to go to the beach with Robert, she should in the first place have declined, and in the second place have followed in obedience to one of the two contradictory impulses that impelled her. A certain light was beginning to dawn dimly within her,--the light which, showing the way, forbids it,” (Chopin 34). The possibility of a life beyond the scope of motherhood, social custom, standards of femininity
gloomy house. The vivid colors and visuals in the story not only force the reader to picture the surroundings in his or her mind, but also contain the hidden connotations of gravity and despair. The inclusion of sounds, like the "distinct, hollow, metallic, and clangorous, yet apparently muffled reverberation," (Poe 27) and aural references to musical instruments, such as the lute quote by De Béringer suggests that the reader experience the mood of the tale in a more auditory and sensory appealing
fresh, spontaneous, and uniquely hip compared to the 1950's architectural style adopted by its neighboring buildings which line the streets of downtown Hartsville. I briefly pause amid several small, circular stainless steel tables and matching metallic armchairs which cover the sidewalk in front of the shop and notice a familiar looking figure sitting in one of the three chairs in front of the right window. The petite young woman dressed in khakis and a black sweater appears relaxed with her
veteran and past commander of the American Legion Post, and vouched for his credibility. Barnett told of how he had spotted a bright metallic object in the distance. His first thought was that it was a plane that had crashed in the night. He traveled the one mile distance between himself and the object to discover that it wasn’t a plane at all, but rather a “metallic disc-shaped object about 25 or 30 feet across. As he stood, looking at the object, a group of archeological students arrived from the
that time, as New Wave” (http://www.erols.com/alloyd/adam2.htm). “New Wave” had a particular style that utilized the synthesizer as a main instrument. The synthesizer was a machine that electronically produced music. It gave a certain artificial and metallic feel to the music. The Cure and Erasure, bands formed during that period of time, were some of the bands that implemented the synthesizer into their music. Though both bands fit into the category of “New Wave” the feel of their music is somewhat
gob-stopper and also bares a close resemblance to the internal structure of the Earth; a sphere divided into three layers, differing in density, composition, strength, and state. The densest of these layers is the core, which is composed largely of metallic iron, with small amounts of nickel and other elements². The less dense mantle then covers this layer, being composed of magnesium and iron silicates. The outermost layer is that of the crust, it has the lowest density of all the layers and can be
with the ammunition is the creation and use of caseless ammunition, which eliminates the need to eject a cartridge. Plastic ammunition has been designed primarily for training but could be effective for terrorists. If a gun made up completely of non-metallic parts, then plastic bullets would be desirable in evading detection at airports. While some terrorists employ the use of assault rifles, light-machine guns, sub-machine guns and even shotguns, the pistol is still the most popular. Revolvers and self-loading