How Molecular Shape Determines Molecular Behavior

Examples

of Non-Polar

Covalent Molecules

H2

O2

Cl2

HCl Fountain Demo

Polar Covalent Molecules

have a positive end and a negative end.

H2O

HCl

NH3

Is CO2 Polar Covanent or Non-Polar Covalent?

Is H2O

Polar Covalent or Non-Polar Covalent?

Ammonia Fountain Demo

Is NH3 Polar Covalent or Non-Polar Covalent ?

Trigonal Pyramidal Shape of NH3 from VSEPR Theory

Ammonia Fountain Demo

Ionic Solids, like salts, form extremely

strong Ionic Bonds due to strong

Electrostatic forces of attraction

Between positive and negative ions.

Because of dipole-dipole interaction,

The positive hydrogen end of one water

molecule “bonds” with the negative

oxygen end of another water molecule.

This is called Hydrogen Bonding.

Hydrogen “Bonding” explains why ice floats on water!

Can Crush Demo

Barrel Crush Demo