Question

1. how does the difference in evaporation rates in figure 2 serve as evidence of the different intermolecular forces in each of the substances tested?

a slower evaporation rate is evidence for a different type of intermolecular force
a slower evaporation rate is evidence of weaker intermolecular forces
a slower evaporation rate is evidence of stronger intermolecular forces
a slower evaporation rate is evidence of no intermolecular forces

Explanation:

Intermolecular forces are the forces of attraction between molecules. Stronger intermolecular forces mean that it is more difficult for molecules to break away from the liquid phase and enter the gas phase (evaporate). So, a slower evaporation rate indicates that more energy is required to overcome these forces, which implies stronger intermolecular forces.

Answer:

A slower evaporation rate is evidence of stronger intermolecular forces.