Mon Prof Augmenté
Separating oil and water
Age 11 · Chemistry
Oil and water do not mix, so they form two layers. The heavier liquid sinks to the bottom and the lighter one floats on top, so you can pour or drain one off.
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Age 11: open this week
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In the picture
- Oil: the lighter liquid, floating on top
- The flat line where the two liquids meet
- Water: the denser liquid, settled at the bottom
- The tap: lets the lower liquid run out into the beaker
Examples
- Oil floating on top of vinegar in salad dressing
- Oil floating on water after a spill
Key takeaways
- Liquids that do not mix form separate layers.
- The denser liquid sits below the lighter one.
Quiz: Separating oil and water (Age 11)
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You pour two liquids that do not mix, like oil and water, into the same container. What happens?
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Two liquids that do not mix are in the same container. Which one settles at the bottom?
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Two liquids that do not mix have formed layers in a container with a tap at the bottom. Which liquid runs out first when you open the tap?
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