Question

Which best describes the vapor point of a substance?(1 point)
Responses

the average kinetic energy of the molecules of a substance in its gaseous state
the average kinetic energy of the molecules of a substance in its gaseous state

the amount of heat energy required to change a substance from a liquid to a gas
the amount of heat energy required to change a substance from a liquid to a gas

the temperature at which additional heat energy causes the substance to change from a liquid to a gas
the temperature at which additional heat energy causes the substance to change from a liquid to a gas

the strength of the bonds between molecules of a substance in a gaseous state

Answer 1

the temperature at which additional heat energy causes the substance to change from a liquid to a gas

This describes the vapor (boiling) point — the temperature where a liquid becomes a gas when heated.