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NYS Diffusion Lab Movement Through a Membrane • http://youtu.be/QU0VBc HnQOk The Benedict’s Test Benedict’s solution is BLUE and will turn YELLOW, ORANGE, GREEN, OR RED IN THE PRESENCE OF A SIMPLE SUGAR (MONOSACCHARIDE) OSMOSIS OSMOSIS is the diffusion of water Adding SALT water will make a cell SHRINK Adding DISTILLED WATER will cause a cell to SWELL back up Osmosis Videos http://youtu.be/GOxouJUtEhE http://www.kscience.co.uk/animations/turgor.htm Diffusion Diffusion is the movement of molecules from high to low concentration. Iodine, Glucose, Starch Results Starch + Lugol’s Iodine = PURPLE/ BLUE BLACK GLUCOSE + Glucose Test Strip = Turns GREEN STARCH DID NOT DIFFUSE BECAUSE IT WAS TOO BIG!