Electronegativity Scale

Entry Task

After learning about the concepts of electronegativity and polarity in yesterday’s lesson, students learned how scientist Linus Pauling assigned electronegativity values to individual atoms as a measure of how strongly an atom attracts electrons.  The Lesson 44 PowerPoint includes a copy of the periodic table with electronegativity values for each element.  It also explains the difference in electronegativity between covalent bonds (0.5 and less), polar covalent bonds (between 0.5-2.1), and ionic bonds (greater than 2.1).  The Lesson 44 Worksheet provides students with the opportunity to calculate the electronegativity difference between two atoms in a molecule and to use that information to determine the type of bond that is present between the two atoms.

Class Notes:

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Molecule Polarity Simulation:

https://phet.colorado.edu/sims/html/molecule-polarity/latest/molecule-polarity_en.html

Homework:

  • Read Lesson 44 in the textbook.  Login via hs.saplinglearning.com and enter your username and password:
    • Username: wahps****s-####### (**** = first 4 letters of your last name and ####### = student number).  Remember to include the dash between s and #.
    • Password: S-####### (the S must be capitalized)
  • Write notes for Lesson 44 on the Chapter 8 Notes handout.
  • Work through the practice problems at the end of Lesson 44.
  • Please ask questions about anything from Lesson 44 you do not yet fully understand.
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