Potato cells
Equipment
Salt solution
Potato
Distilled water
Weighing machine
Paper towels
Knife
Osmosis is the movement of water molecules from a high concentration to a low concentration. This only involves the movement of water and is therefore different from diffusion. Water particles are small enough to fit through this bilayer, and so can freely pass through it. However, such particles as sugar or salt are too big to fit through the membrane and are kept out.
Prediction
I predict that if the salt solution is hypertonic, higher than the inside of the potato, the potato should lose weight. I predict that as the solute concentration increases, the mass of the potato will decrease. This is because the water particles move from a high attention to a low concentration. As the solute concentration gets higher and the water concentration will get lower, therefore the water particles will move out of the potato and into the solution outside because the concentration outside the potato is lower. Therefore the higher the solute concentration the more mass the potato will lose.
Method
Cut equal-sized pieces of potato Blot with tissue paper and weigh Put pieces i...
