Intermolecular forces

Question 1

what is a dipole

Answer 1

a separation of charge where they are not balanced out

Question 2

what are london dispersion forces

Answer 2

dipole forces that induce dipoles in other molecules because they are attracted to the partial +ve or partial -ve side

Question 3

what is the relationship between polarisability & molar mass

Answer 3

direct

Question 4

what is the relationship between polarisability & electron cloud

Answer 4

direct

Question 5

does higher polarisability have a higher boiling point? why

Answer 5

yes, takes more energy to overcome the forces in the electron cloud

Question 6

what else affects boiling point, other than london dispersion forces

Answer 6

dipole-dipole forces

Question 7

why is it so easy to dissolve NaCl in H2O

Answer 7

the dipole forces of H2O make it easy to separate the molecules because they’re attracted to the H2O

Question 8

what influences melting point

Answer 8

the magnitude of electrostatic attraction e.g. (loses 2, gains 2 > loses 1 electron gains 1 electron)

Question 9

are ionic solids good at conducting electricity

Answer 9

no, unless they are dissolved or heated to become a liquid, then they may be better