2.4

Question 1

List the intermoleclar forces from weakest to strongest

Answer 1

London Dispersion Forces, Dipole - Dipole, Hydrogen

Question 2

What does each intermolecular force apply to?

Answer 2

London Dispersion can apply to polar or nonpolar molecules, dipole - dipole applies to polar and hydrogen applies to polar if it has O-H, N-H, F-H. Polar always has dipole - dipole and London dispersion. Non-polar will only ever have London dispersion.

Question 3

What is required for a polar molecule to occur?

Answer 3

Must have a polar covalent bond, asymmetrical ends. Dipoles going in the same direction.

Question 4

What does hydrophobic and hydrophilic mean and what molecules can be hydrophobic or philic?

Answer 4

Hydrophobic means that the molecule does not mix well with water and hydrophilic means that the molecule does mix well with water. Non-polar is always hydrophobic. Polar is often, but not always, hydrophilic. If the polar molecule has a hydrogen bond then it is hydrophilic.