Explain why smaller molecules have lower boiling points

There are intermolecular forces between small molecules. Intermolecular forces are much weaker than the strong covalent bonds in molecules

Explanation:

conduction is the transfer of thermal energy (heat in transfer) due to collisions between the molecules in the object. collisions between adjacent atoms and molecules transfer kinetic energy from the warmer to the cooler object. the objects must be in physical contact.