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In the experiment, spices (or any insoluble powder) is scattered on the surface of a pan of water. The particles all "migrate" to the edges of the pan when detergent is added to the water surface in the center of the pan. The insoluble particles "run away" from the detergent. This illustrates the effect of the detergent on the cohesive properties of the water - it has lowered the cohesion (changed the surface tension) in one area of the surface.

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9y ago

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