Firework in a Jar
Professor O will help you learn: Drops of food colouring are stirred into oil and floated on top of warm water, where they sink and burst into silent, swirling firework trails. Children learn that oil and water do not mix, and that water-based food colouring stays in little beads in the oil until it reaches the water and spreads out.
⚠️ Use warm tap water, not hot water from the kettle. Glass jars can break, so an adult should check the jar and help with pouring. Wipe up oil spills straight away because they make floors slippery.
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.
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