Question

electrical bonding investigation plan quick check
which best describes the vapor point of a substance? (1 point)
○ the strength of the bonds between molecules of a substance in a gaseous state
○ the amount of heat energy required to change a substance from a liquid to a gas
○ the average kinetic energy of the molecules of a substance in its gaseous state
○ the temperature at which additional heat energy causes the substance to change from a liquid to a gas

Explanation:

To determine the correct description of the vapor point (boiling point) of a substance, we analyze each option:

• The first option refers to intermolecular forces in gas, not vapor point.
• The second option describes the heat energy (enthalpy of vaporization), not the temperature (vapor point).
• The third option refers to temperature as average kinetic energy, but vapor point is the temperature for phase change, not just the kinetic energy of gas molecules.
• The fourth option correctly defines the vapor point (boiling point) as the temperature at which a substance changes from liquid to gas upon adding heat.

Answer:

the temperature at which additional heat energy causes the substance to change from a liquid to a gas (the fourth option)