Question

why water vaporized but oil not?​

Answer 1

Answer:

$answer$

The water molecules attract each other, and the oil molecules stick together. That causes oil and water to form two separate layers. Water molecules pack closer together, so they sink to the bottom, leaving oil sitting on top of the water.

Answer 2

Answer:

A: Actually, the water can evaporate at lower temperatures than 100°C, just as it could with no oil. However, the oil layer can slow the evaporation dramatically. If the water is heated to boiling, with big bubbles of vapor popping up from inside the liquid, the oil will be less effective in slowing the evaporation