Chemical Bonding, Properties and Structure - Properties of Small Molecules

Question 1

what is usually the relative melting + boiling points of substances that consist of small molecules

Answer 1

low

and they are usually gases or liquids

Question 2

what is the strength of the forces between the molecules in small molecules

Answer 2

weak

it is these intermolecular forces that are overcome, not the covalent bonds when the substance melts or boils

Question 3

the larger the size of the molecules the larger the size of the _____________

Answer 3

intermolecular forces, therefore larger molecules have a higher melting and boiling points

Question 4

why dont these substances conduct electricity

Answer 4

because the molecules do not have an overall electric charge