1.Un enlace
es una atracción dipolo-dipolo que ocurre entre las moléculas que contienen un átomo de hidrógeno unido a un átomo pequeño altamente electronegativo con al menos un par de electrones solitario.

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.

c, liquids evaporate, creating a gas

the answers would be

the first one and the second one