The strength of cohesive forces in a substance:
A) is directly proportional to the substance's melting and boiling points.
B) is inversely proportional to the substance's melting and boiling points.
C) is directly proportional to the substance's melting point and inversely proportional to the substance's boiling point.
D) is inversely proportional to the substance's melting point and directly proportional to the substance's boiling point.
E) is independent of the substance's melting and boiling points.

Question

Quizplus · Accepted Answer

The strength of cohesive forces in a substance refers to the attraction between molecules in the substance. These cohesive forces determine the substance's physical properties, including its melting and boiling points. Generally, substances with stronger cohesive forces will have higher melting and boiling points. Therefore, the strength of cohesive forces in a substance is directly proportional to its melting and boiling points, making choice A the best answer.

The Strength of Cohesive Forces in a Substance