Yes, it is possible to stack liquids of different density scales on top of each other. This phenomenon is known as liquid layering or liquid stratification. When multiple liquids with different densities are carefully poured into a container, they will naturally separate and form distinct layers based on their densities, with the denser liquid settling at the bottom and the less dense liquid floating on top.
The key to successfully layering liquids of different densities is to pour them slowly and with precision, taking care not to disturb the layers already formed. Additionally, it is important to consider the compatibility of the liquids being used to ensure they do not mix or react with each other.
This effect can be observed in various examples, such as the classic density tower experiment using liquids like water, oil, and syrup. Each liquid layer occupies a specific position in the container based on its density, resulting in a visually striking stacked arrangement.
It's worth noting that over time, diffusion and mixing can occur between the layers due to molecular motion or external disturbances. Therefore, maintaining the distinct layers for an extended period might require careful handling and a container that minimizes mixing, such as a tall and narrow vessel.