The overarch purpose of this lab was to see if the amount of salt concentration impacted whether a potato stick grew, shrunk, or stayed the same in size/mass. Our hypothesis was, if potato slices are added to 0%, 1%, and 2% salt solutions, then the solution is hypotonic and will have a positive net gain. And, if the potato is add to the 3% solution, then the solution will be isotonic and the weight will stay the same. However, after testing the data and gathering helpful information, the hypothesis does not support the results of the lab. The potato in the 0% solution originally weighed (potato 1) 2.2 grams and (Potato 2) 1.9 grams. After weighing the potato after they sat in the solution overnight, the potato then weighed (Potato 1) 2.8 grams and (Potato 2) 2.4 …show more content…
In this case, the potato became more squishy and visibly smaller in size than it originally started as. Finally, the potatoes that were placed in the 3% solution (potato 1) started as 2.1 grams and ended as 1.6 grams. Potato two started as 2.4 grams and ended as 1.8 grams. The net loss for this solution ended up being -0.55 grams. The potatoes after soaking in the 3% salt solution were very squishy and significantly smaller in size. Since the potato shriveled up and got smaller, then it is hypertonic. This is because there is more salt, which sucks, to make the flow of the water go inside the potato to outside the potato. The result of the control group, which is the 0% salt solution and 100% water solution, compared to the 2% and 3% solution, helps to show how the movement of water works. Since water moves from high to low concentrations until it reaches equilibrium, it was easy to see how the amount of salt present in a solution impacted the mass of the potato
Conclusion In my conclusion, the potatoes with the lowest concentration gained the most mass, and would become hard relating back to the Turgor theory I stated earlier. In contrast to this, the potatoes in the most concentrated solution lost the most weight thus becoming plasmolysed and limp also relating back to the background I have mentioned earlier. Evaluation In general the experiment was succesful the results were consistent and also were in accordance with the theories made at the start.. The experiment could have been improved by: · More subjects used instead of potatoes · More potatoes · Wider time ranger · Different molarities Using this variety of methods could have improved the experiemnt, however I was generally satisfied with the results of this osmosis experiement.
Osmosis in Potato Tubes Osmosis: Osmosis is the movement of water molecules through a semi-permeable membrane from a high concentration to a low concentration. Diagram: [IMAGE] [IMAGE] Aim: To see the effects of different concentration of sugar solution on Osmosis in potato tubes. Key factor: In the investigation we change the sugar solution from: 0%-10%-20%-30%-40%-50% this is the independent variable; the dependant variable is the change in mass. Prediction: I predict that all the potato tubes in pure water or low concentration sugar solution will swell because water enters their cells by osmosis.
I will leave the potato chips in solution for the same time at each solution concentration. I will use the same method at each concentration, and for each potato chip individually, in that I will dry the excess water off the chips in a similar manner, and use the same accuracy of the weighing scales, prepare the chips for use in the same way and other aspects. I will keep the surface area of the chips as constant as possible, this being that I will use chips of the same cross sectional area and length. I found in my preliminary work that the chips in the higher concentration of sucrose solution tended to float, thus excluding a certain part of their cross-sectional area from the solution, I do not know how to stop this. I will carry out all of my experimental work at room temperature and thus temperature will not affect my experiment.
Aasman Peri, the daughter of Emperor Shahpal, played the significant role of Amir Hamza’s first wife when he was in the magic world Qaf, along with Mehr-Nigar’s rival. As Emperor Shahpal struggled to control the rebellions happening in Qaf, Aasman Peri primarily controlled Qaf. Throughout Amir Hamza’s quest, Aasman Peri showed character development as she changed from a feisty, aggressive, and envious fairy to a compassionate friend.
When doing this experiment I was able to see the effect of different concentrations on the rate of osmosis, each was done by measuring the initial mass and length of the potato cylinder and after osmosis, the results were conducted to show that as the sucrose concentration increases the rate of osmosis also increases as I said in my hypothesis thusly making a direct decrease in mass.
To gain accurate results, I will have to make the experiment a fair one, to do this I will implement the following: [IMAGE] Wash my hands before preparing any potato samples. -So no grease, dirt or any salts transfer from my hands to the potato pieces before the experiment takes place. I will take core samples from the potatoes. -To ensure maximum surface area for the salt concentration to cover. Make sure that only my variable factor changes throughout the experiment and other factors stay constant.
Prediction: I predict that a high sugar solution will cause the mass of the potato to decrease. This will be due to osmosis. Osmosis is the diffusion of water from a region of high concentration to a region of low concentration across a semi-permeable membrane, such as the one of the potato. If the water concentration inside the potato is higher than the water concentration in the solution then the cell will lose water through osmosis, which will cause it to shrivel. When the plant cell is in said state it is plasmalised. However, if the plant cell is in a pure water solution, the plant will take in a large amount of water and has gains enough water, when a plant is in this state- it is said to be turgid. When this happens, the plant is said to be turgid. So, I predict that when the potato is in a strong sugar solution it's mass will decrease.
The Effect of Different Concentration of Salt Solutions on Potato Tissue Title: An investigation into the affect of different concentration salt solutions on potato tissue Aim: .I have to find out the effect of varying salt concentrations on a potato tissue. Also to find out how osmosis occurs with different salt concentrations from very dilute to very concentrated. I will be looking for any changes in mass and length Prediction: I predict that the most concentrated salt solution (1 molar) will be the solution that will have the most dramatic effect upon the tissue of the potato. As the solution goes down the line in other words gets more and more dilute or weaker it will have a less distinctive effect upon the potato tissue.
The Effect of Salt Concentration on the Weight and Length of a Potato Chip. I am trying to find out if and how different concentrations of salt solution affect the weight and length of a potato chip in a certain amount of time to be spent. This will involve me performing the experiment. measuring the potato cylinders weight and length before and after the experiment putting results in a table producing charts showing the differences or similarities in results analyzing the results and finally evaluate the whole experiment. THEORY I already know that osmosis will only occur across a semi-permeable.
The experiment was only an indication of what length of potato chip `I should use. I decided to use the three cm lengths of potato chip because it gave a bigger percentage change therefore I would be able to acquire clearer results. The results are shown below. Length of Potato Chip Before Length of Potato Chip After Percentage Change Distilled Water 2 cm's long 3cm's long 2.03cm's long 3.1cm's long 1.5% increase 3% increase Diluted Sugar Solution. 0.2mole dm -3 2cm's long 3cm's long 1.68cm's long 2.52cm's long 16% decrease 42% decrease Concentrated Sugar Solution.
The Investigation of Osmosis in Potato Chips Osmosis will occur across a semi-permeable membrane whenever there is a difference between the water concentrations on the two sides of the membrane, and when this happens to cells they will either become turgid if water flows into them, or plasmolysed if water flows out of them, and therefore changing their mass. Aim: To investigate how changing concentration in a sugar solution affects the rate of osmosis in potato chips. Prediction: I predict that as potato chip is placed in a solution of high water concentration then the potato chips will increase in weight and if put in a low concentration then it will do the opposite. If the concentration of a solution into which a potato chip of 2cm of a potato is placed is greater than a certain level the potato chip will contract, and if the concentration is less than that level it will expand. This can be seen in living cells.
The Effect of Salt Solution Concentration On The Mass Of Potatoes Introduction = == == == ==
The Effect of Different Solutions on Potato and Cucumber Strips Plan ---- Introduction Plants in the soil have their roots in a dilute solution of various mineral ions. Sometimes, the soil they are planted in gets flooded with sea water (which has an average of 0.3 sodium chloride concentration). In these cases the roots are observed to wilt and become flaccid. In my experiment, I will simulate this situation using potato and cucumber strips, placing them in different solutions (sodium chloride, glucose and sucrose) at different molar concentrations.
Therefore, my results are reliable and allow me to draw an accurate and reliable conclusion. In the future, I could extend my investigation by using different concentrations of salt solution, for example ranging from 0-10% salt solution. I could also use more concentrations in my experiment, which would give me more results. This would then also give me a more accurate line of best fit, and give me a more accurate measure of the salt concentration inside the potato cells. Therefore, the reliability and accuracy of my results and conclusions would be improved.
Does the concentration sucrose solutions affect the length and diameter of potato strips after being soaked in each solution for 19 hours to indicate whether the solution is isotonic, hypotonic or hypertonic to the tissue of potato strips when the temperature of the surrounding is kept constant at 27˚c?