VSEPR Balloons
Inflated balloons connected at their bases will push against each other to naturally mimic the configurations of electron groups around a central atom. This demo allows students to both see the shapes and to apprehend that these shapes are the natural consequence of objects that repel each other but are bound together at a central point.
2 - linear
3 - trigonal planar
4 - tetrahedral
5 - trigonal bipyramidal
6 - octahedral
Curriculum Notes
This demo can be used at the beginning of a unit on VSEPR theory.
Lead Time
One day of lead time is required for this project.
Preparation
Inflate the balloons and tie together tightly at their bases.
Materials
20 balloons of various colors, i.e., two of one color, three of another, etc.
string
Procedure
Balloon sets are displayed to students.
Safety Precautions
Wear goggles while inflating the balloons.
