Electron Domains

Winter Break Survey

We began the day with the Lesson 37 PowerPoint.  Students learned about electron domains and how they affect the shape of a molecule.  They then worked in pairs on the Lesson 37 Worksheet.

Key ideas:

  • noble gases (single atoms) are visualized as points
  • molecules consisting of two atoms (i.e. hydrogen fluoride) are linear
  • molecules consisting of three atoms can be bent (H2O) or linear (CO2)
  • molecules consisting of four atoms, like ammonia (NH3) are called pyramidal
  • molecules consisting of five atoms, like methane (CH4) are called tetrahedral


  • Read Lesson 37 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 37 on the Chapter 7 Notes handout.
  • Work through the practice problems at the end of Lesson 37.
  • Please ask questions about anything from Lesson 37 you do not yet fully understand.

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