Metals: metallic bonding Ionic compound (metal +nonmetal): ionic bonding Molecule (nonmetal +nonmetal): covalent bonding 3.1 Metallic Bonding 1) Definition The electrostatic attraction between a lattice if positive ions and delocalized electrons. 2) The strength of metallic bonding (depend on) Delocalized electrons (=valence electrons=Group number) More valence electrons‚ stronger metallic bonding Ionic radii (=distance between nucleus and e-) Greater ionic radius‚ farther distance between
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energy is needed to break the strong bonds (ionic or covalent) operating in three dimensions. The oxides of phosphorus‚ sulphur and chlorine consist of individual molecules - some small and simple; others polymeric. The attractive forces between these molecules will be van der Waals dispersion and dipole-dipole interactions. These vary in size depending on the size‚ shape and polarity of the various molecules - but will always be much weaker than the ionic or covalent bonds you need to break in a giant
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El Paso High School: Representing the Power of Greek and Roman Architecture Nicholas Damon Schultz Art History 1305 Dr. Max Grossman November 20‚ 2013 El Paso High Schools east and southeast facades are neo classical designed structures from Henry Charles Trost constructed between 1914 and 1916. Trost was an architect that was a large part of El Paso’s architectural history during a significant portion of economic growth in the late 19th and early 20th centuries.1 El Paso High Schools
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Christopher Sipe 05/08/04 Philosophy 101 Prof. M. Gligarov First-order Desires and Second-order Volitions In his Freedom of Will and Concept of a Person‚ Harry Frankfurt asserts that the common philosophical approach to the concept of a person is wrong‚ as it interferes with his own perception. Frankfurt mentions Strawson’s definition: "the concept of a type of entity such that both predicates ascribing states of consciousness and predicates ascribing corporeal characteristics . . . are equally
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ion is an atom or a molecule with a positive or a negative charge due to the loss or gain of one or more electrons. Ionic solids are salts (such as NaCl) that are held together by a strong force of attraction between ions of opposite charge. Molecules are the smallest physical units of an element or a (chemical) compound. Ionic solids are also known as salts because salts are ionic compounds that are formed from a reaction between an acid and a base. Hydrates are inorganic salts which contain
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Ionic Reactions Abstract This experiment is designed to study the nature of ionic reactions‚ and write net ionic equations for precipitation reactions‚ as well as to identify spectator ions‚ perception reactions and solubility of different compounds. Experiment and Observations In this experiment I was using a 96-well plate to add two drops of the following solutions into seven wells in rows A through E: cobalt (II) nitrate‚ copper (II) nitrate‚ iron (III) nitrate‚ barium
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are significant to life on earth: ionic‚ covalent (polar and non-polar)‚ hydrogen‚ and Van der Wahls (interactions). b. How is energy transferred between these bonds and what role does oxygen play in the formation and breaking of bonds?” In the world of chemistry‚ we as humans have the ability to discover the physical sciences that concern the composition‚ properties‚ and reactions of substances that surround us daily. According to studies‚ in order to produce the molecules of life on
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The Physical Properties of Eleven Chemical Compounds Problem: Discover whether various chemical compounds are molecular or ionic and if they are acidic or basic. Hypothesis: If the compound is ionic‚ then it will be soluble because the energy given off water molecules compensates for the energy needed to break ionic bonds‚ also‚ if the compound is Ionic‚ it will be an electrolyte‚ because they mostly break up into ions when in water. If the compound is molecular‚ then it will be soluble‚ it cannot
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Chapter 6 - Answer Key to Section Review 1-3 Section Review 1 1. What is the main distinction between ionic and covalent bonding? Answer (A): Ionic bonding involves the electrical attraction between large numbers of anions and cations. Covalent bonding involves the sharing of electron pairs between two atoms. Translation: -Ionic bonding happens between a metal and a non-metal (east coast and west coast) -One atom completely donates its valence electrons to another atom -Metals
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people saw architecture as an art for the gods and goddesses of Greece. To capture the heart of many Greek citizens‚ Iktinos used different orders of architecture and added special touches to each building‚ he designed‚ including the Parthenon‚ Temple of Epicurean Apollo‚ and the Telesterion. Iktinos ’ works are compared by Ionic‚ Doric‚ and Corinthian Orders of Architecture‚ and by the layout and by decoration. According to Byers‚ there is not much written biographical information on Iktinos. Iktinos
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