Fluorine Moissan discovered fluorine in 1886. It is a chemical element with the symbol F‚ atomic number 9‚ 9 electrons and protons‚ 10 neutrons‚ and the atomic mass of 19. Being the lightest halogen‚ it has one stable isotope‚ fluorine 19. At standard pressure and temperature‚ the element is a pale yellow gas as a liquid its a bright yellow. The electrons are located outside the nucleus of the atom. Electrons are organized in such a way that the space between them are inter dispersed. Within this
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Introduction: Chemical equilibrium is when the concentrations of the reactants and products have reached a state where reactions occurring in one direction are at the same rate of reactions occurring in the opposite direction. This process‚ called dynamic equilibrium‚ is the main subject of Le Chatelier’s Principle. Le Chatelier pointed out that if a system at equilibrium is subjected to a stress that momentarily causes the system to be not in equilibrium‚ a spontaneous change will occur to
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Faculty of Business Administration Academic Year 2014-2015 MBA 6503 Organizational Studies Case Report: DOW CHEMICAL: INNOVATING FOR SUSTAINABILITY By Vi Nguyen Student # 3503832 Instructor: Prof. Doug Flint October‚ 2014 Background on Dow Chemical Company (Dow) Dow‚ a multinational corporation based in Midland of Michigan in the United State‚ was R&D-intensive and diversified-industry leader in chemistries‚ advanced materials‚ and agro-sciences with technology-based products and
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bonds formed between two ions by the transfer of electrons. The speed at which a chemical reaction proceeds is known as the rate of reaction. The rate of almost every reaction can be increased or decreased due to different factor. Scientists have identified five factors that affect the rate of reaction. The five factors are temperature‚ concentration of the reactants‚ surface area‚ agitation (mixing)‚ and catalyst (chemical helpers). The collision theory states that the rate of a reaction is directly
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Monomer(s) Function(s) in Living Organisms Carbohydrates C‚ H‚ and O Monosaccharides Source of energy Lipid C‚ H‚ and O Glycerol and fatty acids Cushion and insulate organs; builds cell membranes Protein C‚ H‚ O‚ N‚ and S Amino Acids Helps chemical reactions‚ provides support and structure‚ provides transport within bodies and provides movement of body Nucleic acids C‚ H‚ O‚ N‚ and P Necleotides Stores and transmits genetic information Part II: Characteristics of Living Organisms
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the following compounds? a) sodium sulfite b) potassium permanganate c) calcium sulfide d) aluminum hydroxide e) mercury (II) phosphate f) tetraphosphorus trisulfide g) nitrous acid 7. Which of the following is not an example of a chemical change? a) converting gasoline to carbon dioxide and water b) digesting starch to give glucose c) grinding sucrose crystals into powdered sugar d) smoking tobacco e) generating carbon dioxide from baking soda and vinegar 8. The density
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the environment Mercury is a persistent‚ mobile and bio-accumulative element in the environment and retained in organisms. Because mercury is an element it is ultimately persistent; it cannot be converted to a non-mercury compound. Mercury in the aquatic environment is changed to various forms‚ mainly methylmercury. Once mercury enters into the environment‚ mercury permanently exists in the environment by changing its chemical forms depending on the environment. Figure as below shows the mercury
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different shapes and sizes‚ they are always moving and they join together to form different materials. But due to no real proof he was considered a fool and that he was crazy. Aristotle Aristotle believed that there were five different types of elements: Earth‚ Wind‚
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the earliest elements explored by humanity. Due to the special red shade it was easy to find in ancient times. The metal was named according to place where it was found‚ the Cyprus islands. Copper produced in massive stars and spread in the world as minerals like chalcocite and chalcopyrite (sulfide of copper)‚ azurite and malachite (carbonate of copper)‚ cuprite (oxide of copper). The atomic number of copper is 29 and the atomic mass is 63.546‚ which means that mentioned element has 29 electrons
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Test bank for Blue Planet 3e Chapter 3 Essay questions (2) 1. Explain how the chemical composition of a mineral controls its crystal structure. 2. Some minerals contain economically important elements. If you were prospecting in the field‚ what tools would you carry to help you identify different minerals? Fill in the blank (18) 1. The three common ------ of matter with which we are most familiar in our everyday lives are solid‚ liquid‚ and gas. 2. --------- are homogeneous masses
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