1. VSEPR Theory and Molecular Shapes Lab

2. Make sense of problem and persevere in solving them
Objective
Today I will be able to:
Draw Lewis Structures to represent the valance electrons of atoms
Represent the formation of ionic and covalent compounds using Lewis Structures
Predict the molecular shape of a molecule using the VSEPR theory
Evaluation/ Assessment
Informal assessment – Listening to group interactions as they complete the illustrating ionic and covalent compounds practice and the molecular shapes lab.
Formal Assessment – Analyzing student responses to the exit ticket and the practice worksheets.
Common Core Connection
Make sense of problem and persevere in solving them
Reason abstractly and quantitatively
Use appropriate tools strategically
Look for and make use of structure

3. Lesson Sequence Warm – Up Explain: VSEPR Theory (Day 1)
Explore and elaborate: Molecular Shapes Lab (Day 1 & 2)
Informal Assessment
Evaluate: Exit Ticket
Formal assessment

4. Warm-Up Draw the Lewis Structures for the following elements: -Sulfur
-Potassium
-Beryllium cation
Which molecular geometry is made up of all 90° bond angles?
Draw the structure that represents the geometry for bent (tetrahedral)
Don't forget about lone pairs!

5. Objective Today I will be able to:
Draw Lewis Structures to represent the valence electrons of atoms
Represent the formation of ionic and covalent compounds using Lewis Structures
Predict the molecular shape of a molecule using the VSEPR theory

6. Homework
STEM Fair
In Class Presentations Wednesday January 22

7. Agenda Warm-Up VSEPR Notes (Day 1) Molecular Shapes Lab (Day 1 & 2)
Exit Ticket

8. Bent (Tetrahedral) Bonds formed: 2 Lone Pairs: 2
Bond Angle: <109.5o

9. Octahedral
Bonds formed:6
Lone Pairs: 0
Bond Angle: 900

10. Molecular Shapes Lab

11. Molecular Shapes Lab Directions
Draw a Lewis Dot Structure for the molecule
Make a model using the kit and draw the shape on your paper
Write the shape name
Write the bond angle
Skip POLARITY for now, and we will come back to this part
Be careful with the kits, do not drop or lose pieces!

12. Exit Ticket Draw the Lewis Structure for CO2
Determine the shape and bond angles of CO2 according to the VSEPR theory.