when oil and water are mixed why does while always form the upper layer and water the lower layer give me short and easy answer

when oil and water are mixed why does while always form the upper laye

1.	when oil and water are mixed why does while always form the upper layer and water the lower layer give me short and easy answer
Answer» THIS IS RELATED TO THE DENSITY OF SUBSTANCE , THE DENSITY OF WATER IS MORE THAN OIL AND WATER FORM UPPER LAYER & OIL IS IN LOWER . HOPE IT HELPS YOU.....!!!