throughout the experiment. I will measure the mass in grams. The potato chip will be.
measured before it is put in the solution, and after. This will allow us to see whether.
osmosis has taken place, and to what extent.
The volume of the solution that the potato chips are kept in must be fair. The must be.
totally covered in the solution, and the amount of solution will be kept the same because.
all the potato chips are the same size. The amount of solution I cover each chip in will be .
50ml. .
The type of potatoes we use are going to be kept the same, because different potatoes.
may absorb at different rates. For this experiment I am going to use the same brand.
The time the potato chip is left in the solution must be kept the same in each.
experiment. This is because more or less solution may be absorbed depending on time. I.
am going to keep each potato chip in each solution for 10 minutes, in a boiling tube.
The surface area of the potato chips will be kept the same by having all the chips the.
same size. This must be kept the same because the amount of surface area exposed to.
the solution may effect the rate of osmosis. The thickness of the chip will already be the.
same, so I will cut the length so that each chip is 3cm long.
To make the mass readings more fair, I will take each chip of the solution, roll all the surfaces gently on a paper towel, (2 seconds on each surface), to remove all excess solution, and I must not squeeze the chip. .
I am also going to use the same balance to weigh my potato chips. This is because the measurements may slightly vary between scales.
I predict that the higher the concentration of salt solution the more water will move out of the potato chip. We know that osmosis the flow of one solvent, (water) of a solution through a membrane while the other constituents are blocked and unable to pass through the membrane. Experimentation is necessary to determine which membranes permit selective flow, or osmosis, because not all membranes act in this way.
