What happens when a suspension is left to stand overnight?

When a suspension is left to stand overnight, the solid particles may settle at the bottom of the container due to gravity, resulting in a clear liquid layer on top. This process, known as sedimentation, occurs because the solid particles are typically denser than the liquid. Over time, the suspension can become less homogeneous, with the solid phase separating from the liquid phase. To re-disperse the solid particles, gentle agitation or shaking is often required before use.