After this lesson, you should be able to...
The effects of IMFs are additive, and the overall strength of the IMFs in a substance is the sum of all of the IMFs that are present. In other words, some substances can make more than one of the interactions that we covered. For example, all substances, even polar ones, exhibit dispersion forces.
In the video below, we look ranking molecules according to their boiling points. We consider the following, in order of importance, when determining relative boiling points.