"Osmosis Rate Potato Surface Area" Essays and Research Papers

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Osmosis Rate Potato Surface Area

Investigation: A factor that affects the movement of water in and out of cells. Osmosis: movement of water from a region of high water potential to a region of low water potential through a partially permeable membrane. High water potential = lots of free water molecules, low solute concentration Low water potential = very few free water molecules, high solute concentration Factors That Affect the Movement of Water in and out of Cells * Solute concentration * If one solution...

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Osmosis Lab

concentration on the rate of osmosis across a potato’s cell membrane submerged for 94 hours in the solutation. Background Information: Osmosis is the movement of solvent molecules across a partially permeable membrane. They move from a region of low concentration (hypotonic) to a region of high concentration (hypertonic). The rate of osmosis across a eukaryotic cell membrane can be affected by different factors; including temperature, concentration gradient, water potential and the surface area for osmosis...

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Osmosis

An investigation how sugar solutions of different concentrations affect osmosis. Research Osmosis is the diffusion of water across a partially permeable membrane from a dilute solution to one of a higher concentration. If a solution has a low concentration then the amount of (in the case of my investigation) sugar, the solute, will be low and the solution will be weak. If there is high amount of sugar then the solution will be concentrated (have a high concentration). When two solutions...

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Analysis: Osmosis in a Potato

Analysis The trend that my graph and results show is that when the potato was placed in a solution that had a higher concentration than the chip itself, the potato lost weight (0.4, 0.6, 0.8 and 1.0 molars). In the same way when the potato chip was placed in a solution that had a lower concentration than itself, the potato chip gained weight (0.0 and 0.2 molars). For my results I calculated the percentage gain/loss in weight using the following formulae: Average change in weight/weight at...

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Affect of Surface Area on Rate of Reaction

Background Information Surface area will increase the speed of reaction as the greater the surface of the solid reactants, the more particles are required to expose and ‘cover’ the capacity of the solid. Increased surface area results in an increased chance of collisions between reactant particles. Since the collisions become more frequent and abundant, the rate of reaction increases. Aim The aim of the experiment is to see if a greater surface area of a dissolvable tablet creates a faster or...

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Osmosis and Potato Tuber

or volume of the plant cells does not change, means there is no net loss or gain of water. Introduction This study shares the results of an effort to understand diffusion and osmosis in general. It focused more into osmosis in plants cell, and how to indirectly measure osmolarity in potato tuber tissue. Osmosis is the diffusion specifically of water across a membrane. Diffusion occurs when certain substance, such as an ion, is more concentrated on one side of membrane. If the membrane allows...

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Total Surface Area and Rate of Reaction

Planning Aim To determine how the surface area of the tablets affects the rate of the reaction. To determine which form of tablets gives the biggest surface area resulting in the fastest reaction rate. Investigation question: What is the relationship between the total surface area of the tablets and the rate of the reaction? Hypothesis: The rate of reaction will be the fastest when the tablets crushed into powder as there is a bigger total surface area resulting in more effective collisions...

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Osmosis in Potatoes

How is Osmosis Affected By the Concentration PLANNING Independent Variable The independent variable in this experiment is the thing that I will be changing in the experiment. This is the range of concentrations that have been obtained by diluting the original 1M solution of Sucrose. This is therefore the only thing that is going to be altered as I am investigating how different percentage of water molecules affects the weight of the the potato thus the rate and direction of osmosis. Dependant...

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Effect of Surface Area to Volume Ratio on Rate of Osmosis

[Type text] [Type text] [Type text] _An experiment on the effect of surface area to volume ratio on the rate of osmosis of Solanum tuberosum L._ BACKGROUND A cell needs to perform diffusion in order to survive. Substances, including water, ions, and molecules that are required for cellular activities, can enter and leave cells by a passive process such as diffusion. Diffusion is random movement of molecules in a net direction from a region of higher concentration to a region of lower concentration...

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Effect of Osmosis on Potato

Effect of Osmosis on Potato Aim: To investigate the effect osmosis has on potato pieces that are placed in different concentrations of sugar solutions in water. Hypothesis: I believe that the more saturated the solution is the lighter the potato will be, and the potato in the clear water will weigh more after being left in the solution over a 24 hour period. This is because the cell membranes in the potato act as semi permeable membranes (meaning that they only allow certain molecules through)...

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