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What household items are selectively permeable?

April 26, 2017household items permeable selectively

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What household items are selectively permeable?

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a plastic baggie is selectively permeable. if you put a baggie of starch and place it in a bowl or container full of water and iodine, the starch bag will change a color while the water/iodine mix will stay the way it was because the starch molecules are too large to fit through the membrane.