structure of simple molecules

Question 1

what are dot and cross diagrams

Answer 1

dot and cross diagrams are diagrams that show which atom the electrons in the bonds originally came from

Question 2

what are intermolecular forces

Answer 2

intermolecular forces are the attraction between the individual molecules in a covalently bonded substance.

Question 3

what do the intermolecular forces do

Answer 3

they increase the size of the molecules so the larger molecules have higher melting and boiling points