Chemical element

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  • Thermodynamic Process Of The Vacuum Fask

    1. INTRODUCTION 1.1 History In 1892, a scientist at Oxford University, Sir James Dewar has invented the “vacuum flask”. This bottle created a vacuum, which is an effective insulator. Dewar created his insulated bottle by sealing one bottle inside another and pumping out the air between them. In 1904, German glass-blower Reinhold burger and his partner Albert Aschenbrenner who patented Dewar’s invention and manufactured it for commercial use. They are the one who made bottles for Dewar. Burger…

    Words: 1112 - Pages: 5
  • Figure 3. Four Isomers Of Non-Acidic Oxygen Compounds

    ii. Non-Acidic Oxygen Compounds Figure 3.4 Isomers of non-acidic oxygen compounds (Retrieved from Chemistry of Petrochemical Processes, 2nd Edition, 2001). C .Asphlathenes It is organometallic compounds and inorganic salts (metallic compounds). Mostly sodium, calcium, magnesium, aluminium, iron, vanadium, nickel are present either as inorganic salts, such as sodium and magnesium chlorides, or in the form of organometallic compounds, such as those of nickel and vanadium (as in porphyrins).…

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  • Assignment: Chemistry Of Magnesium And Silicon

    group 2 element with the symbol, Mg, an atomic number of 12 and has a molar mass of 24.31 [1]. It is made up of 12 protons, 12 neutrons, and 12 electrons. It’s electron configuration is 1s2,2s2,2p6,3s2 this given as noble gas configuration is [Ne]3s2. It has a melting point of 650 °C and a boiling point of 1090 °C [2]. It has a metallic radius of 150 pm, a coordination number of 72(6), and a density of 1.74 g cm-1 [3]. It is a silvery white metal; this is shared by all of the group 2 elements. …

    Words: 995 - Pages: 4
  • Pentacles Research Paper

    A Pentacle is very similar to a pentagram. A pentagram is a five-pointed star, each point representing one of the five elements, earth, air, fire, water, and akasha also known as spirit. A pentacle is a pentagram encased in another shape; most commonly a circle but it can any shape, a pentagon, a triangle, or another star. The word its self is broken down into two pieces, “penta” meaning five sided, and “cle” referencing the circle. It is a symbol cloaked in history and dripping with meaning.…

    Words: 798 - Pages: 4
  • Summary Of Mark Miodownik's Stuff Matters

    the intricacies of the materials that allow the modern world to exist and thrive. In chapter 8, Unbreakable, Miodownik discusses the significance and characteristics of various forms of carbon in a historical lens. Although derived from the same element, graphite, diamond, and graphene all have unique properties unlike any other materials. Miodownik begins by offering a relatable anecdote to his childhood art class in order to truly show the readers the prevalence and wonder of carbon. He then…

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  • Chemistry: Calcium And Magnesium

    Of the most abundant elements together 98 percent of the 8 elements form the mass of the earth’s crust, ocean and atmosphere. Two of the most abundant elements of the eight are calcium and magnesium. Calcium and magnesium are located on the periodic table located both in group 2 sharing the same family meaning that they share chemical property’s as well as the same valence electron because of their location and family relation to the period table. The alkaline metals are a reactive group of…

    Words: 1031 - Pages: 5
  • Hydrogen Essay

    of about 28 other elements including, Potassium, Sodium, and Calcium. Each plays a major role on the daily functions of the human body. Oxygen accounts for roughly about two-thirds of the mass of the human body and is use in cell respiration. Carbon is part of the molecular structure in certain fats, proteins, and carbohydrates; which are essential for human health. Nitrogen is only about three percent of the mass of the human body and yet is the fourth most abundant element found in the…

    Words: 925 - Pages: 4
  • Glenn T. Seaborg's Life: Glenn T. Seaborg

    friend and partner Jack Livingwood used targets of tellurium and bombarded it with deuterons and some with neutrons to reveal iodine 131, which had a half-life of eight days. (talk about iodine 131’s importance). In Seaborg’s life, the meaning of this element held major importance due to its aid in his mother’s cure of hyperthyroidism. Seaborg and Jack also discovered cobalt 60, which is also a critical medical isotope. Cobalt 60 emits gamma radiation which in turn focuses directly on cancer…

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  • Definition Of Atoms And Mocules

    Definitions: 1. Atoms: According to Dalton’s atomic theory, atoms are the basic units of matter and the defining structure of elements. Atoms are made up of three parts: protons (positively charged), neutrons (uncharged) and electrons (negatively charged). For example: Sodium ( ) has 11 protons, 12 neutrons and 11 electrons. 2. Molecule: Molecules form when two or more atoms form chemical bonds with each other. It doesn’t matter if the atoms are the same or are different from each other. For…

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  • Rare Earth Research Paper

    Gadolinium 's element symbol is Gd with an atomic number of sixty four. Its atomic weight is 157.25 AMU. It is grouped with the Lanthanides, it has a melting point of 1313 degrees Celsius and it has a boiling point of 3273 degrees Celsius. Gadolinium is a soft silvery metal that reacts with oxygen and water. In nature the element occurs as a mixture of six stable isotopes gadolinium 158, 160, 156, and 157,155,154,152. The…

    Words: 2253 - Pages: 10
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