Potato Experiment Osmosis Experiment

The experimental hypothesis for this experiment was prove as the results from the experiment provide evidence to suggest so. The osmosis process was shown when the potato cylinders were submerged in the salt solution and over time this only became more prominent. Looking at graph A, the potato cylinders submerged in the water solution gained mass and became harder when pressure was applied. This meaning no osmosis happened as expect as the mass gain implies there was just passive transport. The water molecules in the water solution were small enough to pass through the semi permeable membrane in order to equalise so there was a balance between the potato and the water solution. On the other hand, the potato cylinders which were submerged in the salt solution had a decrees in mass and became soft, delicate, brown in places, and smaller. This meaning the osmosis

As there was a time limit for how long we had to conduct the experiment, we had to cut off the time at 35 minutes and then just have it overnight rather than observe it until 60 minutes and then do 24 hours. As an improvement, if we were able to have more time then we would have been able to produce more results and data points which could further improve the analysis providing stronger evidence. Another limitation which effected our experiment was the fact we had limited weighing scales in class which had to be shared between groups. Because of this there were times we had to wait longer than others between trials in order to be able to weigh the potato cylinders and record the change in mass. To improve this if the experiment were to be completed again, it would be ideal for every group to have a weighing scale each. This would save time as no group would have to wait to use the scale and would also mean the time in-between trials could be as accurate as