... is because the water molecules pass from a high concentration, i.e. In the water itself, to a low concentration, i.e. In the potato chip. Therefore, the chips in higher water concentrations will have a larger mass than in higher sugar ...

... Celsius) * Left it in the tub for 24 hours * Took out the test tubes and placed them on a paper towel in the order I put them in so that I wouldn't get confused * Dried each potato chip with the ...

... not accurate enough and for the real thing we would need to use callipers. The rest however was fine and achieved the expected results. Apparatus Test Tubes x5 Potato Chips (roughly 4.2g) Measuring cylinder - Measure 15mls of salt solution ...

... air to in any other way affect the experiment. The test tubes will then be left over night so osmosis can occur fully. After 24 hours, I will take each potato strip and re-weigh them all, recording these results. I ...

... in the experiment. Plant cells always have a strong cell wall surrounding them. When they take up water by osmosis they start to swell, but the cell wall prevents them from bursting. Plant cells become "turgid" when they are put in ...

... the oxygenated blood around. Both also increase so that you can get carbon dioxide out quicker. If you do loads of exercise you start respiring anaerobically (doesn't use oxygen). This is an inefficient way to release energy from glucose. Glucose --> ...

... got bigger by 0.1cm and it got harder and stiffer, the chip in weak sugar solution stayed the same and the chip in strong sugar solution got smaller 0.2cm and it got floppy and softer. To improve it for the ...

... by-products like carbon dioxide and water out of the cell), how hormones such as insulin works within or body and how many other chemical processes take place in our body. BACKGROUND INFROMATION The theory of diffusion defines that molecules move from high ...

... in each dish. After a period of time I will then come back and take the same results before comparing the two sets of data. My fixed variables will be the initial length of the pieces of potato, the time they ...

... of molecules in the tubing after making it heavier. In test tube 2 The water molecules in the Visking tubing were of high concentration and therefore diffused through the tubing into the sugar solution until the concentrations were equal. Therefore ...

... permeable solution with 8/10 parts water and the other side was 4/10 parts water, the side with 8/10 would flow from its higher concentration to the lower concentration in an attempt to even out the concentration on both sides. The ...

... hand etc. The accuracy of the results is to be increased by repeating the results at least 2 times. This reduces the chance for experimental and/or human error. Also, there was one experiment where the reaction to displace 20ml of water ...

... distilled water. sugar molecule glass tubing rising level of water molecule solution visking tubing tightly tied at top and bottom concentrated sugar solution pure water The solution on the right-hand side of the membrane (inside the tubing) has ...

... flow. As the potato is a plant cell, it contains a vacuole and a cytoplasm. The cell membrane is also partially permeable i.e. it lets some substances in but not all substances. This means that water paeticalscan diffuse into cells ...

... flow. As the potato is a plant cell, it contains a vacuole and a cytoplasm. The cell membrane is also partially permeable i.e. it lets some substances in but not all substances. This means that water paeticalscan diffuse into cells ...

... cell wall, which lets smaller molecule such as water through, but does not allow bigger molecules to pass through. The molecules will continue to diffuse until the area in which the molecules are found reaches a state of equilibrium, meaning ...

... take four readings for both salt and sugar, ranging from one to four spatulas of each substance. I am also going to take a reading with pure deionized water as a control. The key features that need to be kept ...

... pressure in the cell wall is so high, that no more water can enter. Turgidity is vital for plants, because that is what makes the leaves stand up into the light. When a plant cell is put into sugar solution ...

... water. The water used to dilute will be taken from the same tap, to try and prevent different impurities in the water from making the test unfair. I will decide what range of concentrations to use based on a pre-test, ...

... taken place from the potato tube into the sucrose solution. This has helped me to show that there will be differences in mass, but it doesn't tell me that there will be differences in changes with lower Molarity solutions or ...

... moving freely. This, in effect, reduces the concentration of water molecules. In Fig. 11 the sugar molecules on the right have captured half the water molecules. There are more free water molecules on the left of the membrane than on ...

... of a range of possible apparatus for cutting the potato I decided to use a cork borer. There was also a range of sizes that the cork borer came in I decided to use the size 6 version. This cut ...

... million years. Many arrive much sooner- some within a few years. * The next question: Could microbes aboard survive ejection and impact? To escape a planet's gravity, a rock must accelerate from zero to at least 11,500 miles per hour in ...

... of the above approaches have disadvantages such as the ADH based on the larvae from egg to adulthood has more inconsistency than one from egg to young larvae. Also some forensic scientists notice that in some cases live larvae samples ...

... results i get are correct and not just got by luck. This result table ensures that i can get the best results possible. Evaluation I think that the procedure was suitable for our purposes and with the apparatus available gained good accurate ...