Oil of density 0.9 g/cm³ is poured onto water of density 1.0 g/cm³. Where does the oil end up?
Question 1 Report
Oil of density 0.9 g/cm³ is poured onto water of density 1.0 g/cm³. Where does the oil end up?
Answer Details
A liquid that is less dense than another does not sink into it, because a given volume of the less dense liquid weighs less than the same volume of the denser liquid, so it experiences a net upward force and rises above it. Since oil (0.9 g/cm³) is less dense than water (1.0 g/cm³), the oil rises to the top and forms a separate layer floating on the water rather than mixing with it or sinking.
The oil cannot mix evenly with the water (oil and water are immiscible) or sink or collect at the sides; the density difference alone determines that it settles as a layer on top.
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