Repeat for each sucrose concentration. Measure and record the mass of the potato strip. Prepare a blank results table before you begin. Then we placed them into test tubes that contained different sugar solutions.
Wear eye protection when using chemical solutions. Set up a series of boiling tubes with each of these solutions.
We used the table to work out the change in mass and used a calculator to determine the percentage change in mass, which we plotted in a graph. Making a series of repeat experiments means that any anomalous results can be identified and ignored when a mean is calculated.
Using the knife have a parent cut the potato in half lengthwise. That means that if the water outside the cell is saltier than the water inside, water will move from the inside of the cell to the outside.
This means they are less likely to get the concentrations confused in the course of the procedure. Investigation d Dry the chips on a paper towel.
Solutions from which the potato chips absorb water are hypotonic. To create a fair test certain aspects of the experiment will have to be kept the same whilst one key variable is changed. Remove the potato strip, dry it carefully using paper towel.
Each cylinder will have a different mass before and after the investigation. Find out how long it takes before there is no further change in mass.
It was important to get all of the measurements, weights and volumes as precise as possible. The solutions should completely cover the chips.
This is because there is the more salt and other dissolved chemicals within the potato then the surrounding water.2 If you can cut the chips an hour before the lesson and leave them in a large bowl of water, they will be fully turgid at the beginning of the experiment. In this case, all the chips will lose mass in the blackcurrant squash solutions (0% blackcurrant squash solution will stay the same).
This simplifies the investigation. Investigate the Effect of Varying Solution Concentration on Osmosis in a Potato Chip Prediction A definition of osmosis is: 'the movement of water molecules from an area of high water concentration to a low water concentration across a semi-permeable membrane' (Oxforddictionary ).
The aim of this experiment is to investigate the movement of water in and out of plant cells. We will write a custom essay sample on Experiment to Investigate Osmosis in Potatoes specifically for you. for only $ $/page. Order now. Search. Related Essays.
The effects of osmosis ; Osmosis and Potato Chips ; To investigate the effect. "Experiment to investigate the Process and effect of concentration of Osmosis" Background knowledge Through previous experiments, and notes we've learnt that Osmosis is a process, which uses the method of diffusion to transfer water molecules from a low to high concentration.
Describe experiments to investigate diffusion and osmosis in living and win living systems. Diffusion living - EXPERIMENT to show the effect of temperature on diffusion in beetroot Independent variable - Temperature.
Investigation of Factors Affect Osmosis in Potatoes Aim The aim of the following experiment was to investigate the effect of varying the concentration of sucrose solution on osmosis in a potato. Preliminary Experiments One preliminary experiment was done before the main experiment.Download