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

To investigate the effect of sucrose solution on osmosis.

Extracts from this document...

Introduction

Elliot Smith 15th October 2001 AT1: Osmosis AT1: To investigate the effect of sucrose solution on osmosis. Aim: Osmosis is the change of water from a weak solution to a strong solution. We are going to try and establish osmosis in potato chips by using different concentrated sucrose solutions with H2O (water): 0.0 mol sucrose 0.2 mol sucrose 0.4 mol sucrose 0.6 mol sucrose 0.8 mol sucrose 1.0 mol sucrose Prediction: If I changed the amount of sugar I predict that the potato will be lighter because osmosis will be increased. If I changed the amount of light, then I predict that nothing will happen because osmosis does not need light. If I change the volume of sucrose in the water, I predict that the more sucrose present, the lighter the potato. I have chosen to change the volume of sucrose. Apparatus: 6x test tubes 4x potatoes 1x bore 1x scalpel 1x pepite 1x ruler 1x scales 6x different concentrated solutions Method: I am going to try and effect osmosis by using different concentration levels in six different test tubes. ...read more.

Middle

I shall then weigh them and make sure that they are within 20mg of each other. The weight of which small 5x1cm shall be going in which test-tube, will be recorded so that I can find a correct reading when I find the results out. I shall put each 5x1cm blocks in order and leave them for 1hour and 30 minutes. After this time is over I will take them out and put each set on a paper towel each. I shall leave them for five minutes and then weigh them. If the mass is less it means that the osmosis process was helped by the sucrose. I shall work this out by dividing original weight by after experiment weight then times it by on hundred. Fair Test: I shall make this a fair test by, making sure that nothing is changed apart from the amount of sucrose in the solution. I shall be repeating this whole experiment twice to make sure that I get a fair and average result. ...read more.

Conclusion

After Recording (grammes) 0 1 2.7 3.14 0.2 2 2.76 2.84 0.4 3 2.81 2.77 0.6 4 2.82 2.44 0.8 5 2.78 2.27 1 6 2.8 2.11 Conclusion: Using this graph can see that the sucrose has made a definite and obvious difference. With 0.0 % sucrose (distilled water), the weight of the potato weight has gone up. This is due to the solution to travel freely along the osmosis passage (diagram shows this in osmosis section). When the concentration level was 0.2 it shows that there was a slight change, in that the weight only goes up about 0.10 grammes. This because the solution is limited to how much it can travel along the osmosis passage (see diagram in osmosis section). For the rest of the test tubes in each of the two experiments it is obvious that the passage of solution gets limited as the concentration contains more sucrose. This shows that sucrose is a strong solution and that it can not pass along the osmosis passage (see diagram in osmosis section). Evaluation: The stronger the solution of sucrose concentration, the less osmosis can happen. AT1 INVESTIGATING OSMOSIS IN POTATOES! BY ELLIOT SMITH ...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

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

    5 star(s)

    dishes may grow more than those in others, leading to inaccurate and unreliable results. * 40 cress seeds will be used in each petri dish. The preliminary work conveyed that this is an adequate amount of seeds to plant in the petri dish, as measurable results were produced.

  2. Investigation on Osmosis using a potato.

    Before we add and solutions we shall use the tissues to wipe off any excess water which will make it a fair test and give us the accurate results that we want. 9. We will then use the balance to take down the necessary readings.

  1. The Effect of Sucrose Concentration on Osmosis.

    The concentration of sucrose will be very important because it will determine in which direction osmosis is taking place. When measuring the mass change in the potato cells, we will need to make sure that the potato cells start off at the exact same mass, length and surface area.

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

    There are four bonds that are used to keep the tertiary structure. These are disulphide bridges, which are covalent and occur between cysteine molecules; ionic bonds, which are between carboxyl and amine groups; hydrogen bonds, between hydrogen and oxygen atoms; and there are hydrophobic interactions between non-polar R groups, which

  1. Investigating Water Potential Of Potatoes.

    The first task I set myself was to find out what concentrations of sucrose solutions were to be used. APPARATUS Potato Scalpel Ruler Measuring Cylinder (250cm�) 1 molar sucrose Solution Test Tubes Chirograph pen 0.5 molar sucrose solution 0.1 molar sucrose solution METHOD 1 Collect potato 2 Cut out 6 pieces from the potato using a scalpel.

  2. Osmosis In Potatoes.

    We set up 14 test tubes, because in order to save time, we intended on doing repeats at the same time as the original experiments were going on. For organisation's sake, we set up all of the test tubes at once, and labelled them individually to avoid confusion later on.

  1. Osmosis - Examining the Effect of Different Molar Sucrose Solution On Plant Tuber or ...

    Tissue paper: To partly dry potatoes after the experiment to avoid the molar solution affecting its weight Cork borer (13 mm diameter): To bore plant tuber or root 250 cm: Test tubes are placed in the beaker in a tally of 5 per molarity, this is because its more convenient

  2. This experiment aims to investigate the effects of 4 different types of fish food ...

    faster than those fed on Aquarian Flakes � Fry fed on Freeze Dried Brine Shrimp would grow no faster than those fed on Natural Foods � Fry fed on TetraPrima would grow no faster than those fed on Freeze Dried Brine Shrimp � Fry fed on TetraPrima would grow no

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