KEY-FinalExamStudyGuide_Fall2013

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Leaming-Focused® Notebook ©2005 Learning Concepts Student Learning Map Unit Topic: How do atoms bond together to form molecules and compounds? Key Learning(s): A. Atom Bonding B. Molecular Shapes Unit Essential Question: A. What are the main bonding theories? B. What do compounds look like three dimensionally? Instructional Tools Conductivity Demonstration Atom Modeling Concept: Concept: Concept: Concept: Electron Dot & Ionic Bonds Covalent Bonds Metallic Bonds Lewis Structure, VESPR Metal + Nonmetal Nonmetal + Nonmetal Metal + Metal Lesson EQ: Lesson EQ: Lesson EQ: Lesson EQ: How many valence electrons are in an element? How are electrons in a covalent bond diagrammed? How are multiple bonds diagrammed? How are ionic bonds formed? How are ionic compound formulas named and written? How are covalent bonds formed? How are covalent molecules/compound formulas written? What is polarity? How are metallic bonds formed? How are metal compound formulas written? What is an alloy and how are they used? How is molecular shape determined? Vocabulary: Vocabulary: Vocabulary: Vocabulary: Valence Electrons Ionic Bonds Covalent Bonds Alloy Octet Rule Cation Polarity Electron Dot Structure Anion Hybrid Orbital Lewis Structure Polyatomic ions Molecular formula resonance Empirical formula Reproduction of this page for classroom and planning use by owner of this book is permitted.
Name ___________________________ Date ___________________ Class __________________ 7 IONIC AND METALLIC BONDING SECTION 7.1 IONS (pages 187–193) This section explains how to use the periodic table to infer the number of valence electrons in an atom and draw its electron dot structure. It also describes the formation of cations from metals and anions from nonmetals. Valence Electrons (pages 187–188) 1. What are valence electrons? Valence electrons are the electrons in the highest occupied energy level of an element’s atoms. 2. The valence electrons largely determine the __________________________ chemical properties of an element and are usually the only electrons used in ________________________ chemical bonds . 3. Is the following sentence true or false? The group number of an element in the periodic table is related to the number of valence electrons it has. _________________ true 4. What is an electron dot structure? It is a diagram that shows the valence electrons as dots. 5. Draw the electron dot structure of each of the following atoms. © Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved. a. argon b. calcium c. iodine Ar Ca I The Octet Rule (page 188) 6. What is the octet rule? In forming compounds, atoms tend to achieve the electron configuration of a noble gas, which (except for helium) has eight electrons in its highest energy level. 7. Metallic atoms tend to lose their valence electrons to produce a(n) ______________ cation , or a positively charged ion. Most nonmetallic atoms achieve a complete octet by gaining or ________________ sharing electrons. Chapter 7 Ionic and Metallic Bonding 59
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KEY-FinalExamStudyGuide_Fall2013

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