Question

unit exam - physical properti...
choose the correct answer.
a student mixed equal amounts of water and oil together in a bottle and found that the oil always floated above the water. what can be said about the density of oil versus water?
water has a greater density than oil.
oil and water must have equal masses and volumes.
oil has a greater density than water.
their densities are equal.

Explanation:

The density of a substance determines whether it will float or sink in another substance. Less - dense substances float on more - dense ones. Since oil always floats on water when mixed, it means water has a greater density than oil.

Answer:

Water has a greater density than oil.