• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Investigating the effect of sugar solutions on the size of potato chips.

Extracts from this document...


GCSE Biology Coursework:- Investigating the effect of sugar solutions on the size of potato chips Plan: I will be investigating the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. Hypothesis: Osmosis is a net movement of water molecules (or other solution molecules) from a region of high concentration to an area of lower concentration through a partially permeable membrane. This will take place until the area of the molecules reaches a state of equilibrium, which is where the molecules are evenly distributed. ...read more.


They are: * The size and weight of the potato chips. * The same temperature * Duration of experiment *Solution volume However, the only variable I would change in order to obtain results, is the concentration of sugar solution Equipment List: * 1 Racks * 6 Test tubes * Molar Sucrose and distilled water * Potato * Cutting Tile * Knife * Cork Borer * Plunger * Measuring cylinder From my preliminary investigation I have set out a method for this investigation. Method: 1. Collect three average sized ground potatoes of same variety. ...read more.


Prepare the solutions of concentrations 0 molar, 0.2 molar, 0.4 molar, 0.6 molar and 0.8 and 1 molar. Pour into the test tubes in percentage ratio giving the various molar concentrations. 6. Then put the chips into the tubes, and record the time, which might be needed for future purposes. 7. Allow the chips to stay in the test tube racks for approximately 24 hours. 8. When bringing out the potato chips, record the time. Then dry all potato chips then weigh them. Dryness is needed so that the weight of the potato chips is accurate. 9. Repeat the experiment for accuracy. Prediction: I predict that the lower the concentration of sucrose the higher the growth rate. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Exchange, Transport & Reproduction section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Exchange, Transport & Reproduction essays

  1. Marked by a teacher

    Sand Dune Succession Coursework

    5 star(s)

    If the mass is less than previous, repeat step 5 until there is no further loss in mass. 7. Heat the dry soil sample over a roaring Bunsen flame for 30 minutes. 8. Allow cooling until safe to handle and weigh to find the mass of burnt soil (p). 9.

  2. Marked by a teacher

    Biology coursework planning - the effect of lead chloride on the growth of cress ...

    5 star(s)

    * Using tweezers, place 40 cress seeds at almost equal distance apart on each medium. * Place each petri dish into a separate polythene bag and fill with some air. Tie the bag and allow the cress seeds to grow for 7 days in an area with lots of sunlight.

  1. To find out the factors affecting the refractive index of liquid by using different ...

    and oil (triglyceride, C57H110O6). Under the same concentration, the density of the solution is higher for sugar than salt. Therefore, the refractive index of sugar solutions are higher than salt solution. The refractive index of glucose and sucrose solution at 2.5g/100ml (1.3563 for sucrose and 1.3613 for glucose)

  2. Investigation on Osmosis using a potato.

    amount of sucrose inside it because there was such a change in mass. As we look more closely to the graph we see that there two points which are very close to the equilibrium. This explains that the increase in my range of solutions has helped in getting better and more accurate results.

  1. Design an experiment to investigate the effect of temperature on the movement of a ...

    Also I could not use a Bunsen burner because it does not have an even temperature distribution, and it would not be possible to have different temperatures for each piece of beetroot. I will also check the temperature of the water bath with a thermometer before I place the test

  2. effects of concentrations of sugar solutions on potato chip cells

    Time Left To React The longer you leave the experiment, the better it will work, given enough time the potato chip can take in or give out any more water molecules. If we had left one batch of test tubes in a solution for 24hours and another of batch for

  1. Examine the effect of placing potato chips into different concentrations of sucrose solutions over ...

    The masses of the potato chips were measured and recorded using a balance to two decimal places, as the masses would be almost certainly identical if they were recorded to one decimal place. 7. The first chip was dropped into its boiling tubes.

  2. Finding out the affect of different concentrations of sucrose solution on the mass of ...

    I left the potato chips in the solutions or air for 20 hours and 20mins and then wiped off excess water and weighed them using a top pan balance. I recorded the results in the table below. The calculations used to work out: The change mass of chips= start mass-

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work