A suspension is defined as a heterogeneous mixture in which solid particles are dispersed throughout a liquid medium, but the particles are large enough to be visible to the naked eye. Unlike solutions, where the dispersed substance is molecularly dissolved and the mixture remains stable indefinitely, the particles within a suspension are subject to gravity and typically settle out over time, a process known as sedimentation. Because the composition is non-uniform and the particle size is substantial, suspensions are characterized by the ability to pass through standard filters, and their stability is easily disrupted by temperature or agitation. The study of suspensions is fundamental to fields such as chemical engineering and materials science, governing applications ranging from paint manufacturing to certain types of pharmaceutical formulations.