The Effect of Osmosis on Potato Chips
Measure the effect of osmosis on potato chips in various
concentrations of sugar solution as well as distilled water.
Principles Involved
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Osmosis
Osmosis is the process by which water passes through a semi permeable
membrane from a solution of lower concentration to a solution of
higher concentration until both solutions are of equal concentration.
Hypothesis
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Osmosis will change the mass of the potato chips. The fashion in which
the mass will be affected depends on the difference in the
concentration of sugar between the potato chips and the sugar
solution.
The potato chips have a higher concentration of sugar than the
solution.
Prediction: The potato chips will increase in mass.
Reasoning: Since the potato chips have a higher concentration of
sugar, water molecules from the solution will diffuse into the potato
chips until they are both at the same concentration.
The potato chips have a lower concentration of sugar than the
solution.
Prediction: The potato chips will decrease in mass.
Reasoning: Since the potato chips have a lower concentration of sugar,
the water molecules from the potato chips will diffuse into the
solution until they are both at the same concentration.
Summary of Hypothesis
The potato chips will increase in mass in solutions of lower sugar
concentrations but will decrease in mass in solutions of higher sugar
concentration.
The Experiment
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I am going to carry out an experiment to measure the change in mass of
potato chips left in a sugar solution for a period of 1 hour. I will
carry out this experiment several times to ensure accurate results.
Method
First, I will use an apple corer and cut out cylindrical pieces of
potato. Afterwards, with a scalpel, I will trim all the potato chips
until they weigh exactly 15g. Then I will place them into beakers
filled with sugar solutions of varying concentrations for 1 hour.
* Note the mass down in the table at the end of the first page.
molecules go in and out of the cell. There is no net movement of water
Planning Firstly here is a list of equipment I used. Boiling tubes Weighing scales Knife Paper towels 100% solution 0% solution (distilled water) measuring beakers potato chips Cork borer. We planned to start our experiment by doing some preliminary work. We planned to set up our experiment in the following way.
A good example would be the experiments with the concentrations of 20% to 60% concentration results to show the change. In the 20% concentration I noticed a decrease in the percentage change in mass for the experiment the percentage was _____ while for the concentration of sucrose 60% the change was _____ we can see that the percentage change in mass is decreasing thus we can conclude that the difference of the initial from the final and as it gets greater that means the mass of the potato changed massively.
As I do this experiment the thing I am going to be changing is the
there would be no flow of water into or out of the cell so the cell
Experiment to Find the Reaction of Potato Chips in a Salt Solution. Aim: to find a reaction of potato chips in a salt solution. Hypothesis: I predict that the potato will change in mass. The difference will occur in accordance to the difference of concentration of the salt solution each potato chip is submerged in.
find the rate I have to find the mass change in 1 hour, and I will
The materials needed are three small beakers (150 or 250 ml), a potato, a knife to cut the potato into pieces, a ruler to measure the potato, something to weigh the potato pieces, a timer, a calculator, and three solutions: distilled water, 10% sucrose, and 50% sucrose. The point of this experiment is to calculate the percent change in the mass before and after soaking the potato in the three different solutions. Create your own hypothesis before beginning the experiment. My hypothesis is that the potato soaked in water will have a higher mass after soaking, and that the potato soaked in the 10% sucrose and 50% sucrose will remain the same. Make sure to keep up with your measurements since they are needed to determine the mass percent change. The best way to accomplish this is to use the table provided at the end of this sheet to record your results. The first thing you need to cut the potato into three pieces of about two cubic centimeters (cm^3) in length. The second step you need to take is weighing each potato piece and writing down its mass. Next, label the three beakers with the three different solutions used. Then, you need to pour distilled water over one piece of potato, 10% sucrose on another, 50% sucrose on the last piece of potato; each solution needs to be poured on each potato piece until they are completely submerged. After they are submerged: set your timer for an
One of the best methods for determining mass in chemistry is gravimetric analysis (Lab Handout). It is essentially using the the mass of the product to figure out the original mass that we are looking for. Thus the purpose of our experiment was to compare the final mass in our reaction to the initial mass and determine the change in mass.
10% - 15%. I intend to place a predefined weight of potato cells (0.15g) in varying concentrations of sucrose solution (0%, 20%, 40%, 60%, 80%), to see the effects of osmosis in the cells of a potato in varying levels of sucrose solution. The potato cores will be prepared, weighed and then placed in the solution and left for a certain amount of time, they will then be removed, re-weighed and the difference in weights calc...
water in the potato, then the water will go out of the potato and into
Part A of the experiment, we were measuring the density of water. In this part, we measured by difference by measuring the mass of the empty graduated cylinder which was 46.35 grams and then added 25.0 milliliters of water to it. When subtracting by difference, our mass of the water was 25.85 grams. This was close to the measurements of the water added to the graduated cylinder. The density of the water was 1.0 grams/milliliters.
with 0.0M (distilled water) and go up by 0.1M until I reach 1.0M and I
The Effect of Salt Solution Concentration On The Mass Of Potatoes Introduction = == == == ==