Miscible or immiscible?
Oils do not dissolve in water but for a separate layer floating on top. Liquids that do not mix completely with each other are immiscible. When you shake up immiscible liquids they seem to mix but soon separate again.
Immiscible liquids can be separated using a separating funnel. When you open the tap, the lower liquid runs out of the funnel and can be collected in a beaker. You then close the tap before the other liquid starts to run out. Put another beaker under the funnel then open the tap to allow the upper liquid to be collected.
If two liquids dissolve in each other, their particles mix completely to make a solution. Liquids like this…