Translations:Adventist Youth Honors Answer Book/Health and Science/Chemistry/72/en
From Pathfinder Wiki
Sugar absorbs water, and as it does, it creates a small current that draws the toothpicks toward it. The Soap, on the other hand, breaks the surface tension of the water and immediately spreads out over the surface. As it moves across the surface, it too creates a current, carrying the toothpicks along as it goes.
