Hi, From the wiki article, I understand that Mixtures can be of three types (by homogenity and particle size): Solution (< 1 nanometer) Colloid (between 1 nanometer and 1 micrometer) Suspension (> 1 micrometer) 1. But if we have two immiscible liquids that each have molecule size particles and mix them mechanically, where do they fit in the definitions? It is definitely not a solution since they are immiscible, but it also cann't be a colloid because the particles (actually molecules) are too small to fit for colloid defnition. 2. What type of intermolecular forces act between the molecules in such immiscible mixture? Thanks, Qshadow.