Chemistry teachers seem to use the ball and spoke model for describing a molecule of a chemical compound in order to teach the youngs its realistic comformation.
I think the model is too simplistic and rigid for young student who is pondering about its possible chemical transformation.
What does each spoke tell about its bond's meaning?
And when a chemical reaction occurs on the compound, then how does a teacher explain the general mechanism that changes the ball and spoke configuration?
This model gives students a fixed idea for chemistry.
Think a wild possibility of electron's behavior now being excavated by quantum mechanics!
An old amateur physicist
February 21, 2013