Chemical element

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  • Ernest Rutherford's Atomic Model

    An atomic model is a proposed idea of what an arrangement of an atom thought to look like. Many physicists such as Dalton Billiard, J.J. Thomson, Ernest Rutherford, and Neil Bohr proposed these ideas and made models based on their own ideas. Out of these physicists, Ernest Rutherford’s planetary model is the most generally accepted atomic model. Ernest Rutherford is a New Zealand born son to a Scottish wheelwright and an English schoolteacher. He did well in school academically as a child and…

    Words: 1434 - Pages: 6
  • Negative Effects Of Carbon 14 Isotope

    An Isotope is an atom of an element which has a different number of neutrons and different mass number but the same proton number. The isotope that will be focused in the essay is carbon 14 isotope. Carbon is found in all living things and is the building block for organic material, there is carbon 12, 13 and 14 and they all have different properties. This isotope was discovered on February 27, 1940 by Martin Karmen and Sam Ruben and is the most radioactive out of all carbon isotopes. The…

    Words: 1020 - Pages: 5
  • How Nature Affects The Workplace Essay

    have been incorporating elements from nature as a decorative element since ancient times, but there hasn’t been any scientific data backing up the benefits of integrating nature into a space until recent times. Enabling the human connection to nature within an environment has been found to address the wellbeing of its occupants. Many urban-dwellers today have forgotten about their connection with nature and the natural world, and living in a world…

    Words: 922 - Pages: 4
  • 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
  • Gold Crown Ring Essay

    The purpose of this paper is to find out what material is the gold crown ring made out of. What is interesting about this topic is that there is a lot of ways to study the gold crown ring. For example, you can test the mass, volume, and density of the ring. In the periodic table Au is the symbol for Gold, it’s atomic number is 79. The Properties of Matter are Mass, Weight, Volume, and Length. Each property has its own way of working with different types of things. It is believed that the…

    Words: 552 - Pages: 3
  • Differences Of Circular Dichroism (CD) Fundamentals

    Circular Dichroism (CD) fundamentals. CD is defined as the difference between absorptions of left (Al) and right (Ar) circularly polarized light beams, CD=Al-Ar For each absorption band, the CD of two enantiomers are always exactly opposite. Theory. For each electronic transition one can define an electric (µij≠0) and a magnetic (mij≠0) transition dipole. Both can lead to absorption of radiation, the intensity of which is directly related to the oscillator strength f, fij≈| µij |2+ | mij |2 In…

    Words: 943 - Pages: 4
  • Hydrogen Sulphide Research Paper

    Chapter 2 LITERATURE SURVEY 2.1. Characteristics of Hydrogen Sulphide 2.1.1. Physical and Chemical Properties H2S is a colourless gas characterised by a rotten gas odour which is highly toxic. It is soluble in different liquids including water and alcohols. It is typically formed under deficit oxygen conditions in the presence of organic matter and sulphate compounds (WHO, 2003). Hydrogen Sulphide is also present in the atmosphere in the range of 0.0001-0.0002 ppm though it may vary with places…

    Words: 6983 - Pages: 28
  • Properties Of Aluminum Essay

    Theq element on the Periodic table that is best representation of my personality would be element 13, Aluminum. Properties of Aluminum its included high melting point, conductivity, malleability, and non-toxicity. Aluminum’s high melting point represents my determined personality. This is because I can face adversity well. Even when situations occur that are extremely unfavorable I am able to keep a cool head and think straight. I can persevere and stay strong allowing myself to solve and get…

    Words: 799 - Pages: 4
  • Salbutamol: Chiral Chemistry By Louis Pasteur

    as albuterol sulphate (10). Below is the chemical structure for albutemol sulphate. http://www.drugs.com/pro/ventolin.html Albutemol sulphate is a white crystalline powder that is soluble in water, thus rendering it for good use as medication (10). The albutemol sulphate is suspended in hydrofluoroalkane propellant known as HFA – 134a, in asthma inhalers (12). The propellant HFA – 134a is the inactive component of salbutamol (10). Below is the chemical structure for HFA – 134a.…

    Words: 2112 - Pages: 9
  • 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
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