This website uses cookies to ensure you have the best experience. Learn more

Osmosis Experiment Essay

3904 words - 16 pages

Osmosis Experiment
Experiment to investigate how equal masses of potato are effected in
different concentrations of 1molar sucrose soloution.


To investigate if osmosis occurs in potatoes, and if so, how it
affects potatos of equal mass (2.5g) in different molar solutions of
sucrose and water.


-Cutting tile which will be used to cut the potato on.
-Knife which will be used to peel the potato with and to cut to
correct mass.
-Burette which will be used to measure the solutions acurately.
-Distilled water to make up solutions as part of the experiment
sucrose to make up part of the experiment
-Potatoes to cut into equal mass and observe what happens to them when
left in differing concentrations of sucrose solution.
-Tissue paper which will be used to dry the potatoes after the
-Electronic Balance to weigh the potatoes acuratley. -Cork borer which
will be used to cut out potato cylinders. -Boiling tubes to put 20ml
of differing solutions into.


-Concentration of solute. -Size or surface area of vegatable. -Type of
vegatable. -Age of vegatable. -Length of time vegatable is left in
solution for.

*The variable used in this experiment has been highlighted in red.


Before the planning the experiment, some will Background Information
will be needed to find out about osmosis, and other matters related to
osmosis, so that a prediction can be made. And to construct a way to
make this a fair investigation. Having already done preliminary work
on the rate of osmosis on potatoes of the same length when left for
differing periods of time this investigation can be seen as a follow
up to the previous one. Whereas in the previous experiment the
variable was time, this experiment will be kept similar however the
potatoes will be kept for the same amount of time but in differing
concentrations of sucrose solution. Also, the potatoes have been
changed from length to mass as mass will provide a more reliable set
of results to analyse.

Background Information:

Osmosis, the net or overall movement of solvent molecules (often water)
from a region where they are at a higher concentration to an area
where they are at a lower concentration through a partially permeable
membrane (sometimes called a selectively permeable or semi-permeable

Substances often move from an area of higher concentration to an area
of lower concentration by diffusion, the result of random particle

In osmosis, two solutions are separated by a membrane that will only
let the solvent particles pass through. This means that the solvent
continues to move freely along a concentration gradient. However, the
other substance involved-the solute-cannot move freely because the

Find Another Essay On Osmosis Experiment

Biology experiment on osmosis for gcse very good got an A* as course work so do not miss out

3762 words - 15 pages experiment six petri dishes were used each with five 4 cm core-bored pieces of potato. As evidence of osmosis occurring I used the difference of weight before (after being blotted for six minutes) and after being in the salt solution. The control is five core-bored potatoes in a distilled water solution. Here nothing anomalous should occur. To make the results valuable the experiment is replicated five times in each petri dish. Any anomalous results in

Lab Report: Concentration of Sucrose Affect on Osmosis

1499 words - 6 pages would be more area exposed for osmosis to take place. The concentration of the solution will affect osmosis, the higher the concentration the less osmosis would take place. The duration of the experiment also affects how much water is gained/lost by osmosis as the longer the duration is, the more osmosis would take place (osmosis would stop as soon as it reaches an equilibrium of water content inside and outside the cell. I will only change

Osmosis Investigation

2093 words - 8 pages lower concentrations and loose less in the higher concentrations than a potato with a low sucrose concentration, creating different results) Volume of solution,(Because if a chip were put in a smaller volume of solution, then the number of water molecules would be smaller and less osmosis could take place) Light levels falling on experiment,(Increased light levels falling on the experiment could increase temperature


787 words - 3 pages pressure have different water potentials.Surface area- the larger the surface area, the more water can be absorbed into the cells, therefore altering the rate of osmosis.In this experiment we wanted to show how the concentration of salt affects the rate of osmosis.HypothesisAs the concentration of salt solution is increased, the rate of osmosis increases.AimMy aim was to find out if the rate of osmosis increases with concentration of salt

Investigating Osmosis Using Potato Cylinders

1105 words - 4 pages Investigating Osmosis Using Potato Cylinders The aim of this investigation is to see how the sugar concentration of a solution eventually affects the size of a submerged potato cylinder. I am conducting this experiment to further my understanding of osmosis. The increase or decrease of the size of the potato cylinder can be explained by osmosis. Introduction:- The core scientific principle, related to my

Lab Report: Osmosis

4385 words - 18 pages Aim The aim of this experiment is to investigate the effects of different concentrations of sugar solutions on the rate of osmosis in plant cells. Equipment 5mm borer Knife White Tile Potatoes Beakers Measuring cylinder Stopwatch

Egg Investigation

635 words - 3 pages The cell membrane controls the movement of substances in and out of the cell. Oxygen and food move inside the cell through the membrane in the process of diffusion. Diffusion occurs when cells move from an area of high concentration to an area of low concentration. Osmosis is a type of diffusion; it is a diffusion of water through the cell membrane. Osmosis takes place when water particles move from a more concentrated area to a less

Principles of Diffusion and Osmosis

1308 words - 6 pages Diffusion and Osmosis Across Dialysis Tubing By Jasper Lee, Leo Zhao, Oliva Skopas, Alistair Dobson, and Alex Bell 11/15/13 Purpose: The purpose of this experiment was to demonstrate the principles of diffusion and osmosis, two processes that are essential for life, by using dialysis tubing (a semi-permeable membrane) to simulate the cell membrane and observe said processes. Introduction: Diffusion is the movement of molecules from a

egg experiment research project

1630 words - 7 pages ). Data are primarily actual photos and numerical quantities that are measured in this experiment. Also, graphs are made available for a pictorial representation of numerical data as well as descriptive observations on actual outcome of the experiment. Phenomena of each step are discussed and explained based on researches made on some keywords such as chemical reaction, acid/base, osmosis, diffusion, concentration gradient, hypertonic, hypotonic

The Effect of Different Strength of Salt Solutions on Potato Cells Through Osmosis

3013 words - 12 pages The Effect of Different Strength of Salt Solutions on Potato Cells Through Osmosis An Investigation to find out how different strengths of salt solution affect potato cells through osmosis. Aim I aim to investigate the effect of different concentrations of salt solution on potato cells when osmosis occurs. Introduction I intent to set up this experiment using equally sized cylinders of potato submerged

Investigation into osmosis in potato cells

2140 words - 9 pages the glucose in the solution, keeping the others the same and ensuring only one variable is changed. However I can't control the temperature, as we will not be working in a thermostat-controlled environment. I don't think this will matter because although I don't know whether temperature affects osmosis, the experiment will only take place once, and all the specimen bottles will be kept together so any temperature changes will be the same for all

Similar Essays

Osmosis Experiment Essay

2262 words - 9 pages Osmosis Experiment Planning Aim: The main subject that I will be planning to investigate is the effects of a concentrated sucrose solution on potato cells on the basis of the Osmosis theory. Background knowledge: The plant cell and its structure To understand osmosis in detail I will need to explain the plant cell (which is the cell included in the osmosis experiment) and its cell membrane

Osmosis Experiment Essay

529 words - 2 pages Background Knowledge: Osmosis definition: Diffusion of water molecules through a semi permeable membrane from a higher concentration to a lower concentration until the concentration on both sides is equal. Osmosis in animal cells: The cell membrane is the partially permeable membrane in animal cells. If the cells were placed in distilled water they gain water, swell and burst. This is known as haemolysis. Osmosis in plant cells: The

Osmosis Experiment Essay

2801 words - 11 pages Osmosis Experiment Planning Introduction Osmosis is the passage of water molecules from a weaker solution into a stronger solution, through a partially permeable membrane. In this case, the tiny holes in the membrane of the potatoes will allow the water molecules to pass through in and out of the solution and the potato, depending

"Experiment To Investigate The Effect Of Osmosis In Potatoes" A Gcse Experiment Looking At The Effects Of The Concentration Of Sucrose Solution On Osmosis In Potato Tubers

2796 words - 11 pages Experiment to Investigate Osmosis in PotatoesThe aim of this experiment is to investigate the movement of water in and out of plant cells. The cells chosen for study will be taken from potato tubers. Firstly I will explain what osmosis is. 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. This definition contains three important statements:a) It is