- Recap from last class: (10 mins)
- What does an atom's electron configuration tell us?
- When an atom loses electrons, which shell will they come out of first?
- What is the electron configuration of Rubidium? - Hand out lesson 5 student notes (2 min)
- Go through Google Slide notes, stopping for Lewis diagram practice (count up valence electrons on the board) (30 mins)
- Have students complete the Bonding & Lewis diagram Worksheet (30 mins)
- I recommend an additional reading and assignment from the textbook here, or you can challenge students to try to create Lewis diagrams for some or all of the polyatomic ions from the polyatomic ion chart (this will be hard so only suggest this to students who are feeling confident).
Supplementary videos:
Lesson 11-12
- Recap from last class: (10 min)
- Draw a Lewis diagram of ammonium (NH4+)
- How do you tell which atom within a molecule holds a charge?
- Which atoms don't obey the octet rule? - Have students pair up, hand out molecule kits, and let students play around with them briefly (have them notice what the different colors mean and also that there are only certain ways things go together) (10 mins)
- Hand out lesson 6 student notes (2 min)
- Go through Google slide notes (20 mins)
Have students build a molecule of each type of geometry and see how changing out bonds/lone pairs affects it as you go - Demo idea: Blow up 6 balloons and tie them together (starting with 2, then 3, etc.) to show students how they sit with each arrangement - they will naturally make the VSEPR shapes. (5-10 mins)
- Hand out VSEPR worksheet for students to work on. Give them the rest of the class to work, plus the following class as a work period.
- There is a PhET simulation on VSEPR that students can play around with when they are done the assignment.
Supplementary video:
VSEPR Theory: Introduction (Tyler DeWitt)
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