suspension
A common example of a heterogeneous mixture that separates into layers over time is oil and water. Due to differences in density and immiscibility, the oil floats on the surface of the water, creating distinct layers. This phenomenon is known as phase separation.
A mixture in which layers are too small to be seen is called a homogeneous mixture or a solution. This type of mixture has particles that are evenly distributed throughout and do not settle out over time.
there is no single chemical formula for milk because it is an emulsified suspension (type of mixture that separates over time)
It appears there was a typo in your question. If you are referring to suspension, it refers to the system of springs, shock absorbers, and linkages that connects a vehicle to its wheels, allowing for relative motion between the two while maintaining stability and control.
A temporary heterogeneous mixture that separates into individual components over time is known as a suspension. In a suspension, solid particles are dispersed in a liquid but can settle at the bottom if left undisturbed due to gravity. Common examples include muddy water and salad dressings, where the components can easily be separated by filtration or allowing time for the particles to settle.
The layers get burried
If a mixture settles over time and separates it is a suspension (milk with chocolate added). If a mixture does not separate overtime but forms lumpy or fluffy masses (like cottage cheese) it is a colloid. If a mixture does not separate or form lumpy masses it is a solution. Suspensions separate, colloids form lumps and may look 'cloud-like' and solutions remain the same.
due to the compaction over time
No it is not. This is because the different substances mixed can be clearly distinguished in the mixture. The particles are large enough to settle out over time, whereas in a homogeneous mixture, the solution will not settle out over time.
suspension
A colloid is a mixture where one substance is evenly dispersed throughout another. You can tell if a mixture is a colloid by shining a light through it - if the light scatters, it indicates the presence of colloidal particles. Another way is by observing if the mixture does not settle into layers over time, unlike suspensions.
The layers are called strata, and they form through the deposition of sediment such as mud, sand, or silt over millions of years. The oldest layers are found at the bottom, with younger layers building up on top, providing a record of Earth's history and changes over time. These layers can contain fossils and minerals that help scientists understand past environments and events.