Why could you say that IMFs are a forms of electromagnetic attraction? That is, how do IMFs act like magnets?

IMFs are like magnets because they keep the molecules in a solution together. Check out the water on penny experiment and you will see the convex meniscus as the hydrogen bonds, dipole-dipole and London dispersion forces are acting between the molecules.

Intermolecular forces (IMFs) are a form of electromagnetic attraction because they involve the attraction between charged or polar molecules. Like magnets, IMFs act by pulling molecules together based on their charge distribution. For example, dipole-dipole forces occur between polar molecules with positive and negative ends, similar to how opposite poles of magnets attract each other. Similarly, London dispersion forces, another type of IMF, arise from temporary fluctuations in electron density, creating temporary dipoles and inducing attraction between molecules, akin to the attraction between magnetic domains in magnets.