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Lab day 1: Gummy bear Osmosis







GUMMY BEARS


·

DIFFUSION: Diffusion is the random movement of molecules.



·OSMOSIS: Osmosis is the  diffusion of water molecules in and out of the membrane of the cell 




               The water can be in one of these situations:



  •  Hypertonic: more concentrated.

  •  Hypotonic: less concentrated.

  • Isotonic: same concentration


EXAMPLE:


We have three gummy bears, one is red, anotherone is colorless, and the last one is yellow. We put the red one in salt water, the colorless one in normal water and the yellow one in honey; and we leave them for 1 day and see what has happened.


When we look at the next day we can see some changes

  • The  colurless one has swell. This is because the water had less concentration (hypotonic) and tried to compensates the concentrations by entering the bear.


  • The red one has shrink. This is because the water had more concentration  (hypertonic) and the gummy bear´s water went out to trie compensating the concentration.



  • The yellow one is at the same size this is beacause the honey and the bear have more or less the same concentration. (isotonic)






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