CHAPTER 2 Professional Standards LEARNING OBJECTIVES | | | | | | |Exercises‚ Problems‚ and | | |Review Checkpoints |Simulations | |
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The process of naming compounds allows chemists to communicate formulae in words rather than in chemical symbols. There are‚ however‚ a few rules about naming compounds which need to be known in order to write a formula in word form or translate a compound in word form into chemical symbols. Ionic compounds If the compound is ionic‚ then the name of the cation (usually metal) comes first‚ followed by the ’compound’ name of the anion. To find the compound name of an anion‚ replace the end of the
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1. Atomic and Molecular Structure a. Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass. The Periodic Table organizes elements by their atomic number - from hydrogen (1) to whatever is the highest one currently known (>105). It is arranged so that similiar members fall in a list such as Chlorine Bromine etc.. The average atomic weight is usually shown with each element‚ but due to isotopes (caused buy nuclear varations)
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AQA GCSE Chemistry Unit 1 C 1: Fundamental ideas: C 1.1. Atoms‚ elements and compounds: * All substances are made up of atoms. * Elements contain only one atom. * Compounds contain more than one atom. * An atom has a tiny nucleus in its centre‚ surrounded by electrons. C 1.2. Atomic structure: * Atoms are made up of protons‚ neutrons and electrons. * Protons and electrons have equal and opposite electrical charges. Protons are positively charged‚ and electrons are negatively
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analyze a known solution that contains the entire Group I cations—silver‚ lead‚ and mercury (I)—and an unknown solution to determine which ions are present and which are absent. II. DISCUSSION: The chlorides of Pb2+‚ Hg22+ and Ag+ are all insoluble in cold water. They can be removed as a group from solution by the addition of HCl. The reactions that occur are simple precipitations and can be represented by the equations: Ag+ (aq) + Cl- (aq) → AgCl(s) (1) Pb2+ (aq) + 2 Cl- (aq) → PbCl2(s)
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1 Report for MATSE 473 Free Radical Polymerization of Styrene using Solution Process and Bulk Process Date: 1/17/2012 Introduction: This lab was designed to demonstrate the free radical polymerization of styrene using solution process and bulk process. It demonstrates specifically with the polymerization of styrene monomer to form polystyrene (PS). This lab was also intended to show the difference between solution process and bulk process and how it affects the yield and appearance
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The Evolution of the Atomic Theory Rob Congrove B4 10/23/00 The five atomic theorys of the past two centuries represent the sudden advancement of science in modern times. Beginning with a basic theory on the behavior of atoms to the current model‚ some changes have been made‚ and some ideas are still the same. Ancient Greek philosophers believed that everything was made up of invisible particles called atmos. Since then the theory of atoms did not progress until 1803. John
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The Progress of the Atomic structure Different theories about the atomic structure were introduced over time. These theories changed as a result of development of different experiments. Leucippus was the first to introduce the theory of atomism‚ however he didn’t write about his theories in detail. However‚ Democritus‚ his student wrote about the theory of atoms in detail. He theorised that everything was composed of atoms and that atoms are solid and indestructible. He also had a theory that
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Q 2.3 (Inventory Cost) A manufacturing company producing medical devices reported $60‚000‚000 in sales over the last year. At the end of the same year‚ the company had $20‚000‚000 worth of inventory of ready-to-ship devices. A. Assuming that units in inventory are valued (based on COGS) at $1‚000 per unit and are sold for $2‚000 per unit‚ how fast does the company turn its inventory? The company uses a 25 percent per year cost of inventory. That is‚ for the hypothetical case that one unit of $1‚000
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Representation of Women In Geoffrey Chaucer’s Canterbury Tales he tells many different stories throughout the novel‚ discussing a variety of topics among the lines of marriage‚ sex‚ gender roles‚ stereotypes and religion. This novel was one of the most revolutionary of its time exploring ideas that no other writers were portraying in their works. Chaucer’s work opened up many areas of conversation now and during the medieval ages which Is why it is taught in schools all over the world. The novel
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