Pepper Runs Away: Soap Experiment
A quick surface-tension experiment using water, pepper and a drop of dish soap. Best for ages 5+ with adult help. Keep hands away from eyes.
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🛡️ Safety first: adult supervision is recommended. Use only the listed everyday materials and never taste experiment materials.
Materials Used
Shallow plateWaterGround pepperDish soapCotton bud (optional)
Step-by-Step
1
🍽️ Add water
Pour a thin layer of water into a shallow plate and let the surface become still.
2
⚫ Sprinkle pepper
Sprinkle a little ground pepper across the water surface. Do not taste or blow on it.
3
🫧 Touch with soap
Put one tiny drop of dish soap on a fingertip or cotton bud, then gently touch the centre of the water.
4
👀 Observe the movement
The pepper quickly moves away from the soap. Discuss how soap changes the water surface. Wash hands and clean the plate afterwards.