Layered Liquids: Oil and Water

Today, I mixed water and oil together and discovered something interesting...

Materials needed to do this experiment:

• 1/4 cup (60 mL) of water
• 1/4 cup (60mL) of oil
• a small glass
• food coloring
  

What I Did:

1. First, I poured the water into the glass
2. I Added a couple of drops of green food coloring and mixed them together.
3. Then I added the oil into the glass.
4. Next, I tightly covered the glass with plastic wrap while holding it on top of the sink( just in case it spills).
5. Shake the glass until both liquids are thoroughly mixed.
   

Results:
It started to bubble. After all the bubbles disappeared, i saw that the layer of oil was on top of the water. In the end, there were still some bubbles on the layer of water but no bubbles on the layer of oil.

Science:
This experiment shows that water and oil are "immiscible" because they do not mix. The reason why the oil is on top of the water is because there is a difference in density of the two liquids. Because the oil is less dense than water, it is on top of the water.