Blue colouring diffusing in water

Blue colouring diffusing in water

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Caption: Diffusion. Blue food colouring begins to diffuse in a beaker of water. Diffusion is caused by the tiny, random movements of molecules in a solution. Over a period of time these movements cause the dissolved substance to become evenly dispersed throughout the solvent. This food colouring, for instance, will eventually produce a uniform blue solution without being stirred.

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Keywords: beaker, diffuse, diffusing in water, diffusion, dye, dye in water, effects, food colouring, in water, liquid, mix, mixing, physical effect, physics

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