Metallic Bonding, Lewis Structures, Mixed Ionic and Covalent Bond Practice

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Metallic Bonding, Lewis Structures, Mixed Ionic
and Covalent Bond Practice
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• Objective
• Today I will be able to
• Explain the movement of electrons in metallic
  bonds
• Draw Lewis Structures to represent the valance
  electrons in an atom
• Correctly name and write formulas for ionic and
  covalent compounds
• Evaluation/ Assessment
• Informal assessment Listening to group
  interactions as they complete the ionic and
  covalent Lewis structure practice and the naming
  compounds practice.
• Formal Assessment Analyzing student responses
  to the lab questions and the naming ionic and
  covalent compounds practice.
• Common Core Connection
• Build Strong Content Knowledge
• Reason abstractly and quantitatively
• Look for and express regularity in repeated
  reasoning

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Lesson Sequence

• Warm Up
• Explain Metallic Bonding
• Explain Lewis Structure Notes
• Elaborate Illustrating Ionic/Covalent Compounds
  with Lewis Structures Practice
• Formal assessment
• Elaborate Ionic and Covalent Mixed Practice
• Formal assessment
• Evaluate Exit Ticket
• Formal assessment

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Warm - Up

• Name the following compounds
• NO2
• Al2O3
• NCl3
• KCl

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Objective

• Today I will be able to
• Explain the movement of electrons in metallic
  bonds
• Draw Lewis Structures to represent the valance
  electrons in an atom
• Correctly name and write formulas for ionic and
  covalent compounds

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Homework

• Finish Mixed Practice Worksheet
• Wear Closed Toe Shoes Tomorrow!
• Bonding Mini Exam on Thursday
• More details to come

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Agenda

• Warm Up
• Pass out Study Guide
• Metallic Bonding and Lewis Structure Notes
• Lewis Structure Practice
• Ionic and Covalent Naming Mixed Practice
• Exit Ticket

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Metallic Bonding Notes
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Metallic Bonds

• Loosely bound valance electrons which are called
  mobile electrons because they are free to move
  around
• delocalized
• Allow the transition metals and rare earth metals
  to have multiple charges

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Electron Movement in Metallic Bonds
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Properties of Metallic Bonds

• Solids at room temperature (except Mercury)
• Ductile
• Malleable
• Good conductors

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Drawing Lewis Structures
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Lewis Structures

• Visual representation of the number of valance
  electrons in an atom

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How to draw Lewis structures

• Write the symbol of the element
• Pretend there are 4 sides
• Use dots to represent the valance electrons
  around the symbol
• Place one dot on each side of the element before
  you form pairs
• Exception If there are only 2 valance electrons,
  they both go on the same side

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Lewis Structures

• C 1s2 2s2 2p2

C

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Lewis Structures

• Examples

Mg 1s2 2s2 2p6 3s2

Mg

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Lewis Structures

• Cl 1s2 2s2 2p6 3s2 3p5

Cl



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Lewis Structures

• Cl 1s2 2s2 2p6 3s2 3p5
• Cl-1 1s2 2s2 2p6 3s2 3p6

-1




Cl




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Illustrate Ionic and Covalent Bonds with Lewis
Structures

• Complete the worksheet using the examples. Ask
  Ms. Ose if you need help with questions.

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Ionic and Covalent Compounds Practice

• Complete the practice with the people around you.
  Whatever you do not finish in class will become
  homework. We will review next class.

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Exit Ticket

• Draw Lewis Structures for the following elements
• F
• Al
• He
• C
• F-1