Osmosis experiments


Osmosis is the movement of water particles across a semi-permeable membrane (partially permeable membrane PPM)  from an area of high water concentration to an area of low water concentration.  

Experiments to demonstrate osmosis.


You can demonstrate this effect with VISKING TUBING, which is partially permeable membrane.  It is sometimes called dialysis tubing as it is used in kidney dialysis machines.  




From the animation it can be seen that water level in the glass tube begins to rise or fall because water either enters or leaves through the visking tubing by osmosis.


Remember: Potato Slices

It can be seen from the animation that potato slices, in pure water, swell up as water enters their cells by osmosis. 

However, in concentrated sugar solution the potato slices shrink as water leaves their cells as a result of osmosis.

Plant Structure and Function


Tags:Osmosis, Movement of water particles, Semi-permeable membrane, Cells




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