I predict, that as concentration increases, the weight and length of the potato chip will decrease. My reasoning behind this, is that the higher the concentration of glucose in a solution, the lower the concentration of water. When the potato chip is put into the solution, it will, by osmosis lose some of its water, and the water will diffuse into the solution of glucose, causing the potato chip to lose water, therefore decreasing in weight and length.
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I predict that my graph will look like the graph above this because, the potato chip used for 0 molar concentration will gain water, as the water moves from a region of high concentration (the solution) to a region of low concentration (the potato chip.) This result will be an example of when the solution is Hypotonic to the potato. However, in the middle of the scale, say 0.5 molar concentration, the graph will go right down, due to the fact that the solution will be isotonic to the potato. In other words, the solution and potato chip are about equal in concentration. The reason for the minus results for 1 molar concentration is that the solution has a lower concentration of water to that of the potato, and so, by osmosis water moves from the potato to the solution, causing the weight to decrease.
Apparatus: -.
1 M sugar solution.
Potatoes.
Potato corer.
Measuring cylinder (250ml).
Stop clock.
Boiling tubes.
Filter paper.
Balance (2 digit).
Safety: -.
u I will be using a very sharp knife, which could injure someone if not handled properly.
u I will also be very careful that the solutions don't get into our bodies internally, because we are not fully aware of the damage it could do to us.
u Wearing safety goggles.
u Keep the working area tidy and dry and also removing baggage from walking space.
u Handle the equipment and apparatus carefully.
Key Factor: -.
The key factor in my experiment is the concentration of the sugar solution ranging from distilled water to 1 molar.
Osmosis Plan An introduction to osmosis. ... Osmosis in humans The kidney is made up of a very large number of tubules. ... Osmosis in animals. ... Therefore osmosis occurs. ... Then I worked out whether the sac had gained or lost weight by osmosis. ...
Through this procedure, the results and the process helped to under what osmosis does in aiding the cell. ... The diffusion of water into and out of a selectively permeable membrane is called osmosis. ... Osmosis does not occur in an isotonic solution. ... After you record you record your data,that would conclude your osmosis lab. ... This graph maps the difference of a group and the class mass change during osmosis. ...
I am going to investigate how the concentration of a sucrose solution affects osmosis in potato cells. Osmosis is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. Hypothesis: Osmosis is defined as the net movement of water or any other solution's molecules from a region in which they are highly concentrated to a region in which they are less concentrated. ... Some other Factors that effect osmosis are the: Temperature Surface area Time spent in the solution The shape and size of the potato used ...
Osmosis Osmosis is a kind of diffusion which only occurs with water. With osmosis, there is a membrane which does not allow dissolved material to pass though it but only water (selectively permeable) Osmosis is the movement of water molecules from a weak solution to a strong solution. Osmosis occurs when water is taken up e.g. ... ato cells by osmosis. ... This liquid or hydrostatic pressure works against osmosis. ...
The function of the contractile vacuoles is to pump water out of the cell caused by osmosis. ... This process is known as osmosis because the higher concentration that surrounds the Paramecium is moving itself to the lower concentration inside the Paramecium. 4. According to the laws of osmosis the plant cells should have exploded. ...
Investigating Osmosis Prediction Osmosis is defined as the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration. ... The greater the concentration of water in the external solution the greater the amount of water that enters the cell by osmosis. ... At this point there will be no change in the length, volume and mass of the potato, as the net movement of water will be zero, no osmosis has occurred. ... At point A the graph suggests that no osmosis has occurred, suggesting that the concentration...
The overall result of osmosis is that water goes in the cell and the cell is expected to swell up. An example of osmosis in plants would be the absorption of water by the roots of plants. In animals, osmosis affects the supply of nutrients and the release of metabolic waste products. ... This lab was about diffusion and osmosis, in this lab we tried to organize the experiment the best we could. ... Conclusion This lab was about diffusion and osmosis, in this lab we conducted the experiment about how diffusion and osmosis work. ...
Key Words: semi-permeable, membrane, diffusion, osmosis, concentration gradient, homeostasis, isotonic, hypotonic, hypertonic Introduction The dependence of life processes on diffusion mechanisms could not be more prevalent. ... The spontaneous net movement of water across a semipermeable membrane from a region of low solute concentration to a solution with a high solute concentration, down a solute concentration gradient is known as osmosis. Osmosis allows cells to regulate the amount of water within their membrane in order to keep from shrinking or swelling (Glencoe/McGraw-Hill, 2006, p. 83...
Discussion and Conclusion Introduction: Background Information In the permeability lab, I gained an understanding of the principles of diffusion and osmosis. ... Osmosis is the diffusion of water through a selectively permeable membrane from a region in which it is highly concentrated to an area that has a lower concentration. ... Osmosis is important because it helps distribute nutrients and discharge metabolic waste products. ... Without osmosis, organelles would have a hard time carrying out duties; such like distribution of minerals and releasing waste. ... Discussion and Conclusion The p...
