What is it? Dysprosium is a silver-white chemical element discovered in 1886 by a French scientist named Paul-Émile Lecoq de Boisbaudran. It wasn’t isolated until a different separation technique (ion-exchange) developed in the 1950s by a Canadian scientist Frank Spedding and his team. This rare element it is never naturally found. It is only made chemically. It can be found in minerals such as xenotime. Dysprosium is a member to the lanthanide family on the periodic table just like all the other
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Reactions & Nuclear Chemistry Assessment Task Assignment Question 1 Produce a summary reactions sheet for all the chemical reactions encountered in production of materials. Your summary should contain the following components a) Name of reaction b) General word equation c) Balance formulae equation d) An example of the reaction Question 2 What types of instruments and processes are used to detect radiation? The properties of nuclear radiation are used to detect their
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In a similar way‚ matter has properties and there are many of them. The two basic properties we associate with matter are physical and chemical properties. Physical properties are those properties that do not change the chemical nature of matter. Chemical properties are those properties that do change the chemical nature of matter. All physical and chemical properties observed for a compound are directly related to the compound’s molecular structure. The most common physical properties are
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LOGOS INTERNATIONAL SCHOOL INNOVATORS CAUGHT IN ACTION: HOW DOES CHEMICAL ENGINEERING AFFECT THE SUDDENLY CHANGING WORLD? Ponhneath Nguon College and Careers Preparation Class Mr. Barrett “But innovation comes from people meeting up in the hallways or calling each other at 10:30 at night with a new idea‚ or because they realized something that shoots holes in how we’ve been thinking about a problem.” -Steve Jobs. It is quite unbelievable how the world has changed so rapidly over the last
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Mixing of two solutions. 55 Class IX EXPERIMENT No: 9 AIM: To study the external features of root‚ stem‚ leaf and flower of monocot and dicot plants. Material Required : Plants of Hibiscus/Peturnia/rose/pea and grass/maize/bamboo/lily or‚ any other ornamental herb with flower and fruits‚ simple or dissecting microscope‚ hand lens‚ slide‚ coverslip and razor /blade. Procedure : 1. 2. 3. Observe the differences in the external features of stem‚ leaf‚ root‚ flowers and seeds. To study the leaf‚ see
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Factors Affecting Rates of Chemical Reactions Prepared By: Kelly Gunter For: Ms. Brohman Course: SCH-4U Introduction The main purpose of this lab was to investigate how temperature‚ concentration‚ the addition of catalysts‚ and the substitution of a more reactive reactant‚ can affect the reaction. The collision theory explains that in order for a reaction to occur‚ reacting particles must collide with one another. An effective collision makes reactants result in a reaction and
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GLENDALE CHEMICAL PRODUCTS PTY LTD v ACCC (1999) ATPR 41-672 Plaintiff: Michael Barnes Defendant/Appellant: Glendale Chemical Products Pty Ltd –Supplier of Caustic Soda which is called “DRANO” Respondent: Australian Competition & Consumer Commission Prepared By: GLENDA B. GAERLAN Presented To: PETER MCGUINNES BUSINESS LAW 1st Semester 2010 Background Facts: Michael Barnes bought a 500g of caustic soda called “DRANO” at a local store
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Biodata/ 25 Professor Ramlan Abdul Aziz Chemical Engineering Pilot Plant Universiti Teknologi Malaysia Ramlan Abdul Aziz was born in Kampung Londang‚ Masjid Tanah‚ Melaka on the 13th of September 1958. He received his primary education at the Masjid Tanah English School and his secondary education at the Malacca High School. He then pursued his O levels at the Grantham College for Further Education in Lincolnshire‚ England. He subsequently continued with this tertiary education at University
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not mix? The answer to this is simple: polarity. What exactly is polarity? A polar bond is when there is a difference in electronegativity‚ which means the tendency of an atom to attract a bonding pair of electrons. When two atoms are bonded together and one attracts more electrons‚ this results in a polar bond. If the atoms have a similar or close to similar amounts of electronegativity‚ the compound is nonpolar. When two compounds that have different polarities are put in a situation together‚ they
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Test #2 ANSWERS CHM 101 Part I Multiple Choice (2 points each) 1. Which element is most likely to form three covalent bonds? A) C B) Si C) P D) S E) Se 2. A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________. A) double; covalent B) double; ionic C) single; covalent D) single; ionic E) triple; covalent 3. Which property could describe a covalent compound? A) It conducts electricity when melted. B) Has a low boiling
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