Diffusion

Diffusion

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Credit: ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Diffusion. Tea dissolving in water in a beaker. Chemicals from the tea leaves, which are held in a perforated bag, diffuse throughout the water forming a solution. Diffusion is caused by the tiny, random movements of molecules in a solution. Over time these movements cause the dissolved substance to become evenly dispersed throughout the solvent, without being stirred.

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Keywords: apparatus, bags, beaker, beakers, beverage, beverages, chemical, chemicals, chemistry, diffuse, diffuses, diffusing, diffusion, dissolves, dissolving, drink, drinks, education, effects, equipment, experiment, experiments, glassware, leaf, leaves, liquid, mixes, mixing, mixture, physical effect, physics, school, schools, science, solid, solution, solutions, spreading, spreads, tea bag, test, tests, water

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