OIL
TREACLE
WATER (with blue food colouring)
I learned that the MOLECULES are different sizes in different liquids which is why they do not mix. If the molecules are close together then it is difficult for objects to get through them. This is why liquids and objects that have more spaced out molecules sit on the top of the treacle. Oil always sits on the top of water because it has very spaced out molecules.
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