Evaporation, entropy and the Marangoni effect

By Declan Fleming2025-06-09T05:00:00

EiC-Exhibition Chemistry-Web index-IMG_8740 copy

Source: © Declan Fleming

Demonstrate thermodynamics to your 16–18 learners with this simple experiment

For a striking visual representation of entropy, use this demonstration of the Marangoni effect with your 16–18 learners. If the conditions are right, a coloured droplet of alcohol in water placed on a layer of oil will evaporate and explode into a beautiful arrangement of smaller spots, illustrating how chaos can quickly form from order. Use the experiment with your A-level, Highers and Leaving Certificate students.

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