2021-12-04

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Chemistry in a Nutshell

Learn about VSEPR Theory (Valence-Shell Electron-Pair Repulsion) and molecular geometries by tying balloons together. Yes, I cover ALL of them.🎈 This can be adapted for use as a classroom or lab activity.

Time Stamps:

0:00 Introduction

Linear Geometry - 2 charge clouds

1:44 Linear Geometry, AB2 (CO2 and HCN)

Trigonal Planar Family - 3 charge clouds

3:20 Trigonal Planar, AB3 (CH2O)

4:25 Bent, AB2E (SO2)

Tetrahedral Family - 4 charge clouds

5:27 Tetrahedral, AB4 (CH4)

6:39 Trigonal Pyramidal, AB3E (NH3)

7:38 Bent, AB2E2 (H2O)

Trigonal Bipyramidal Family - 5 charge clouds

8:47 Trigonal Bipyramidal, AB5 (PCl5)

11:21 Seesaw, AB4E (SF4)

12:28 T-shaped, AB3E2 (ClF3)

13:54 Linear, AB2E3 (I3-)

Octahedral Family - 6 charge clouds

15:25 Octahedral, AB6 (SF6)

17:17 Square Pyramidal, AB5E (BrF5)

18:06 Square Planar, AB4E2 (XeF4)

19:17 T-shaped, AB3E3

19:59 Linear, AB2E4

20:36 Bond angles are estimates.

Chemistry Citations:

Flowers, Theopold, Langley, and Robinson. Chemistry. 2th ed. OpenStax, 2019.

Available as a free PDF document: https://d3bxy9euw4e147.cloudfront.net/oscmsprodcms/

media/documents/Chemistry2e-OP_TkF9Jl3.pdf

Overlay Image Citations:

12:09 "Two young girls in long skirts play on a seesaw" by simpleinsomnia is licensed with CC BY 2.0. To view a copy of this license, visit https://creativecommons.org/licenses/by/2.0/

17:40 "Great Pyramid of Giza also known as Pyramid of Cheops or Khufu" by www.holgersbilderwelt.de is licensed with CC BY-ND 2.0. To view a copy of this license, visit https://creativecommons.org/licenses/by-nd/2.0/

#vsepr #chemistryeducation #chemistryteacher