intermolecular forces

Question 1

Permanent Dipole-Dipole

Answer 1

-due to an attraction between molecules with dipoles/ there is polarity
-the greater difference in electronegativity,the greater the strength of the dipole-dipole force

Question 2

Hydrogen Bonds

Answer 2

-between molecules that contain a hydrogen atom bonded to an atom of fluorine, oxygen or nitrogen ONLY
-strongest intermolecular force

Question 3

London Forces

Answer 3

-due to moving electrons results in temporary dipoles
-induces neighbouring dipole in such a way that one end of the dipole is attracted to the other
-larger the molecule, stronger the force because there are more electrons, so more points of contact
-weakest forces