Question

how does the strength of the forces that hold the basic particles of a substance together relate to the temperature at which the substance changes state?
a. weaker forces between particles means the substance boils at a higher temperature.
b. stronger forces between particles means the substance boils at a lower temperature.
c. stronger forces between particles means the substance melts at a lower temperature.
d. stronger forces between particles means the substance boils at a higher temperature.

Explanation:

When the forces between particles are stronger, more energy (in the form of heat, which is related to temperature) is required to overcome these forces and change the state of the substance (e.g., from liquid to gas - boiling). So stronger inter - particle forces mean a higher boiling point.

Answer:

D. Stronger forces between particles means the substance boils at a higher temperature.