To make this a fair test I will have to keep the following factors the same
- The time the potato is left in the solution
- The mass of the potato cylinder used.
- The volume of the water
- The time the potato is in
Method
This is the method in steps
- I weight out the potato chip and write it down in a table
- I put it in the solution, for every different try e.g. 0.1m
- I than leave it for 24 hours
- Then I weight it and write down the results
This is a diagram of what the experiment will look like
The diagram above shows the glucose penetrating the chip after the potato chip has been in the beaker for 24 hours.
Safety
Safety is an important aspect in every experiment, even if the experiment seems to be very harmless. This is why I'll be taking this into consideration.
My table of results is on the next page.
Conclusion
The evidence obtained from this investigation supports the prediction I made. It also shows that the potato cells increase mass in solutions with a high water concentration and decrease in mass in solutions with a low water concentration.
In this experiment, I believe that I have collected enough data to support my hypothesis. This investigation was, I think, successful. Successful meaning my results collaborated my predictions.
The graph shows that:
· Osmosis actually took place in the experiment.
· As the molars increased, the percentage of the weight difference decreased.
Evaluation
My results were accurate, but I could have done the experiment more times to make them more accurate.
Yes there was one measurement, which does not fit the pattern, is 0.2m, so I decided to try the experiment again.
I did collect enough results to help me write a definite conclusion because I did have enough results to help me with the conclusion
Yes if I had the chance of doing the experiment again I would make sure I had enough help, and enough results to help me with my conclusion.
