To make it a fair test i will keep the potatoes the same size in length and width.
I am going to record my results by measuring the mass instead of the size of potato because it would be more accurate and easier to do because i have electric scales so it will be accurate.
I intend my experiment to demonstrate that a potato chip placed in sugar will increase size due to sugar water ends the vacuoles of cells by osmosis.
The equipment i will need to carry out this experiment are: boiling tubes, measuring cycled, scales (electric), potatoes, potatoes cutter, knife, sugar solution.
What i am going to do?
I got all of the equipment together, cut all 15 potato chips the same length and width, and measured out 15cm3 of sugar solution. (0,0 0.1 0,4 0,6 0,8) i weight the chips before i put them in the sugar. I done 3 chips for each solution. Now i will leave it like that for a few days out of the sunny light so they don’t dry out then i will weight them again and find the difference between before and after.
Prediction
Our teacher carries out the practice experiment and the results are above. The lower the concentration the heavy the mass at 0.3 there should be no change it the mass. The least will be the one that has the highest concentration in sugar.
Conclusion
For my results the experiment worked well and my perdition was right the more concentrated the solution the lights the chips got and 0.3 there should be no change, which was right. My result have showed what i wanted it to the high the concentrated the lighter they got. There were no results, which look wrong everything fitted in well. I did not exclude any of my results because they were wrong. Next time i could try heating the solution above room temperature to see what happen.
By
Michael ireland
