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Investigating The Effect Of Concentration Of Salt Solution On The Mass Of Potato Chips
Aim:
The aim of this investigation is to see whether the amount of salt
solution affects the mass of the potato chip
Hypothesis:
In the solution below, water will diffuse from the dilute solution
into the concentrated solution through the process of osmosis.
Therefore the dilute solution level will fall and the concentrated
level will rise
Line Callout 2: Disapproved (is unable to go through the semi permeable membrane O
Line Callout 2: Approved (is able to go through the semi permeable membrane P
Salt solution
Water
[IMAGE]
When a substance such as salt dissolves in water, the substance's
molecules stick with some of the water molecules, so the concentration
of the water molecules decreases. When the water molecules are the
same concentration on both sides of a semi permeable membrane and salt
is dissolved into one of them, osmosis will occur as shown in the
diagram below.
Semi permeable membrane
[IMAGE]Water molecules Salt molecules
[IMAGE]
Osmosis is the movement of water molecules across a semi permeable
membrane from a region of high water concentration to a region of low
water concentration.
My prediction in this investigation is that the solution with the
least salt will make the potato weigh more, thus the potato in the
distilled water solution will weigh the heaviest, because there will
be a higher concentration of water molecules in the distilled water
than inside the potato cylinder. Therefore, water will move in from
high concentration to low concentration this will increase the mass. I
based my prediction on the process of osmosis, which is a special type
of diffusion. It occurs across a permeable membrane, which allows some
particles to diffuse through it and not others. Most cell membranes
are like that, being permeable to water and some solutes only. Osmosis
is therefore the diffusion of water through a partially permeable
membrane. The basic principles of diffusion apply here.
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.
If the concentration of one side of the membrane is greater than the molecules will travel from the higher to lower concentration. Eventually there will be a dynamic equilibrium and there will be no net movement of molecules from one side to the other. Osmosis is the diffusion of water. Like diffusion, the water moves from a region of higher water potential to a region of lower water potential.
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.
The “waiting period” method of gun control is basically a two-step process. The first step in the procedure is that the person wanting a gun goes to the gun shop to buy a gun. Then, he/she must wait one to two weeks while the government performs a small background check for past criminal activities, disorderly conduct, or lack of mental/emotional stability. During this time, if the purchaser of the gun wanted the gun for a “quick crime” it is hoped that they will not still want to cause bodily harm after a few weeks of waiting around. Another dumb law is that is in effect in California is that if you want to carry a concealed handgun, “you have to prove that you have some special reason to carry”(Rauch 731).
In osmosis, water can travel in three different ways. If the molecules outside the cell are lower than the concentration in the cytosol, the solution is said to be hypotonic to the cytosol, in this process, water diffuses into the cell until equilibrium is established. If the molecules outside the cell are higher than the concentration in the cytosol, the solution is said to be hypertonic to the cytosol, in this process, water diffuses out of the cell until equilibrium exists. If the molecules outside and inside the cell are equal, the solution is said to be isotonic to the cytosol, in this process, water diffuses into and out of the cell at equal rates, causing no net movement of water. In osmosis the cell is selectively permeable, meaning that it only allows certain substances to be transferred into and out of the cell.
The water molecules move freely through the semi-permeable membrane; this is a passive process. We will do this experiment by placing potato chips in different strength solutions and checking for mass increase/decrease. Prediction I hypothesize that if we place potato chips in different strength solutions that there should be different results, some with noticeable changes in mass, the other will be nearly the same. The potatoes should gain/lose mass by the movement of water. If there is a change in mass, it is because water has entered or left the cell.
The Effect of Water Concentration on the Mass of Potato Tissue Aim: The aim of this investigation is to discover the effect of water concentration on the mass of potato tissue, and also to investigate the movement of osmosis through potato tissue. Scientific Knowledge: When a substance such as a sugar dissolves in water, the sugar molecules attract some of the water molecules and stop them moving freely. This, in effect, reduces the concentration of water molecules.
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.
If you are an immigrant or just want to live in one of the best counties in the world illegally, with no penalty if you get caught come to Americana. They will welcome you with open aims Just like (Fred Reed) – said in “Why Blame Mexico” (we say to impoverished Mexicans, “See this river? Don’t cross it. If you do, we’ll give you good jobs, driver’s licenses, citizenship for your kids born here, school for said kids, public assistance, governmental documents in Spanish for your convenience, and a much better future. There is no penalty for getting caught. Now, don’t cross this river, hear?” How smart is that? We’re baiting them. It’s like putting out a salt lick and then complaining when deer come. Immigrant parents would be irresponsible not
Potato chips are a popular snack that many Americans enjoy daily. We all know they aren’t very healthy, but none the less, we continue to enjoy them. Often though, people never take the time to stop and think about how potato chips are manufactured. What goes into a potato chip? Where do the ingredients come from? Are potato chips hurting the environment?
Prediction I think that when the potato is placed in distilled water the potato mass will increase. This is because water, has, if pure, a weaker concentration than the potato, and the water molecules move in through a partially permeable membrane by osmosis. If the potato is in a high concentration salt solution, the potato mass will decrease because the potato is less concentrated than the salt solution, and the water will move through the partially permeable membrane into the stronger solution. However, if the potato mass stays the same after the experiment, this means that the water/salt solution and the potato must be of equal concentration.
The Effect of Solute Concentration on the Rate of Osmosis Aim: To test and observe how the concentration gradient between a potato and water & sugar solution will affect the rate of osmosis. Introduction: Osmosis is defined as, diffusion, or net movement, of free water molecules from high to low concentration through a semi-permeable membrane. When a substance, such as sugar (which we will be using in the experiment we are about to analyse), dissolves in water, it attracts free water molecules to itself, and in doing so, stops them from moving freely. The effect of this, is that the concentration of (free) water molecules in that environment goes down. There are less free water molecules, and therefore less water molecules to pass across a semi-permeable membrane, through which sugar molecules and other molecules attached to them are too big to diffuse across with ease.
There is so much discussion about the effects immigration is having on our American society. Let’s step back from all of that. I’m going to tell you a story about a different category of immigrants and their impact on our state’s riparian systems and Garden State history. The immigrants, packed into the damp hold of the German steamship Werra, were not particularly welcome when they made landfall in the United States on February 24, 1883. Xenophobic feelings were running high, with many Americans worried that the Europeans would displace residents already struggling to stay afloat. These newcomers were being described as voracious and monstrous. It was said that they would steal food from the native populations and even eat their young.
We need to have better guidelines for buyers. Also have to include deep background checks for buyers. Gun buyers cannot be under psychiatric evaluation while purchasing a gun. Senator Bernie Sanders said, “ Nobody should have a gun who has a criminal record or anyone who has domestic abuse situations”. He is implying that the background checks have to be deeper.
Not a day goes by without extensive coverage of the EU refugee crisis in the media. Everybody should know by now. That there are thousands people leaving their home, their live, they leave everything behind to leave the country. Trek cross half of Africa, Asia, and the Middle East, pay a lot of money, get abused by smugglers, and then risk their lives on unseaworthy boats? Why would they do that? Nobody cares. Until everybody was on social media and saw a shocking picture of a 3-year-old Alan Kurdi, dead on a beach in Turkey after a boat taking his family to Greece capsized. Then everybody began to pay attention to the Refugee Crisis. Should the European Union open its borders or not?