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Oil-and-Water Mystery Jar

Ages 5–10⏱ 25 minMess: MEDIUMGrown-up help: LowKitchen Science
Professor O stands proudly next to the finished science jar, holding it up with one hand to display the final result.

Professor O will help you learn: Children find out that oil and water refuse to mix and that oil always floats on top because it is less dense, then use washing-up liquid to break the oil into tiny droplets. It links to the Hanukkah story of the small jar of olive oil that lit the Temple lamp for eight days, and explains why the Hanukkah foods fried in oil are so special.

⚠️ Supervise so oil does not get spilled on the floor, as it makes it slippery. Food colouring can stain clothes and skin. Wash hands afterwards and do not drink the mixture.

Play through the project step by step, with narration read aloud.

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Steps

Tap any step to play from there — the narration plays inside the player.

Make it your own: Test honey, milk and golden syrup to build a layered density tower and find where the oil sits.