Unit 4 Quiz 1

​Mrs. LeJeune

Polar vs Nonpolar

• A polar molecule is sharing electrons unequally (two different poles, one positive and the other negative)

• A nonpolar is sharing electrons equally (tug of war with two trucks pulling with the exact same force)

INTRAmolecular VS INTERmolecular Forces

INTRAmolecular forces are the bonds that occur inside or within a single moelcule.

INTERmolecular forces (IMF) exist between two or more molecules

INTERmolecular Forces

Examples of intermolecular forces include london dispersion (LDF), dipole/dipole, and hydrogen bonding

London Dispersion Force (LDF)

The weakest force

Occurs between ALL MOLECULES

If a molecule is nonpolar then the only force present will be LDF

Dipole Dipole Forces

Occurs between all polar molecules

The attraction of the positive end of one molecule to the negative end of another

Hydrogen Bonding

Must have a hydrogen directly bonded to a F, N or O.

Strongest type of intermolecular force

Polar and Nonpolar

Nonpolar molecules will contain only london dispersion forces

Polar molecules will contain london dispersion and dipole dipole

Molecules with hydrogen bonding will contain all three types of forces