Osmosis Coursework
INTRODUCTION:
Osmosis is defined as the net movement of water or any other solutions molecules from a region in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially permeable membrane such as a cell wall, which lets smaller molecules such as water through but does not allow bigger molecules to pass through. The molecules will continue to diffuse until the area in which the molecules are found reaches a state of equilibrium, meaning that the molecules are randomly distributed throughout an object, with all areas having an equal concentration.For this particular investigation I think that the lower the concentration of the salt solution in the test tube, the larger the increase in mass of the potato chip will be. This is because the water molecules pass from a high concentration. Therefore, I believe that the chips that are in the tubes containing a higher concentration of water than salt will have a larger mass than chips in tubes with higher salt concentrations.
As shown bellow osmosis
Osmosis in PlantsPlants depend on osmosis to move water from their roots to their leaves. Osmosis is also crucial in plants as it protects leaves against losing water through evaporation.In osmosis in plants there are specialized cells called Guard cells which are all along the surface of the leaves. Each pair of guard cells surrounds a stoma or pore, controlling its ability to open to release water. Factors effecting rate of osmosisOsmotic pressureOsmotic pressure is the pressure caused by the difference of solute concentration between solutions separated by a semi-permeable membrane. As osmosis takes place pressure builds up on the side of the membrane where the solvent concentration has increased. This pressure prevents more water from entering the membrane and osmosis stops.PermeabilityPermeability affects the rate of osmosis because if a material is permeable it can allow molecules to pass
Osmosis is defined as the net movement of water or any other solutions molecules from a region in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially permeable membrane such as a cell wall, which lets smaller molecules such as water through but does not allow bigger molecules to pass through. The molecules will continue to diffuse until the area in which the molecules are found reaches a state of equilibrium, meaning that the molecules are randomly distributed throughout an object, with all areas having an equal concentration.For this particular investigation I think that the lower the concentration of the salt solution in the test tube, the larger the increase in mass of the potato chip will be. This is because the water molecules pass from a high concentration. Therefore, I believe that the chips that are in the tubes containing a higher concentration of water than salt will have a larger mass than chips in tubes with higher salt concentrations.
As shown bellow osmosis
Osmosis in PlantsPlants depend on osmosis to move water from their roots to their leaves. Osmosis is also crucial in plants as it protects leaves against losing water through evaporation.In osmosis in plants there are specialized cells called Guard cells which are all along the surface of the leaves. Each pair of guard cells surrounds a stoma or pore, controlling its ability to open to release water. Factors effecting rate of osmosisOsmotic pressureOsmotic pressure is the pressure caused by the difference of solute concentration between solutions separated by a semi-permeable membrane. As osmosis takes place pressure builds up on the side of the membrane where the solvent concentration has increased. This pressure prevents more water from entering the membrane and osmosis stops.PermeabilityPermeability affects the rate of osmosis because if a material is permeable it can allow molecules to pass