Investigating Osmosis
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Prediction Osmosis is defined as is the movement of water molecules across a partially permeable membrane from a region of high water concentration to a region of low water concentration. In a high concentration of water the amount of solute e.g. sugar is low. This could be called a weak or dilute solution. In a low concentration of water the amount of solute e.g. sucrose is high. This could be called a strong or concentrated solution. When two such solutions are divided by a semi-permeable membrane the water will move from the area of high concentration to the...
be prevented by amalgamating sets of results, for example of a whole class, where each experimenter used a different potato. I think that three sets of results was a good number. However, I think that in order to improve my results, the last concentration 1 moler needs to be retaken as it is an anomalous result.
be prevented by amalgamating sets of results, for example of a whole class, where each experimenter used a different potato. I think that three sets of results was a good number. However, I think that in order to improve my results, the last concentration 1 moler needs to be retaken as it is an anomalous result.
Further work could be carried out to include concentrations that increased in 0.1 M rather than 0.2M. This would increase the accuracy and improve the graph. Other investigations could include using different varieties of potato or different plant tissues e.g. carrot.
Prediction I predict that the higher the concentration of salt, the lower the mass the potato cylinder will become. This is because there is a greater concentration of water molecules inside the potato cylinder, so the water will drain from the cylinder by osmosis, to where there was a...
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Planning: I am investigating the effect of increasing enzyme concentration on the rate of reaction. Prelimary work is very important and I conducted this before carrying out my final experiment. It is important because I need to find out which was the best vegetable to use,...
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According to the Oxford Concise Dictionary, the meaning of environment is defined as "physical surroundings and conditions, esp [ecially] as affecting people's lives". Over the year's we have come to find that our environment, and the natural resources, animals, plants and trees within them are not endless but...
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Introduction: In this piece of coursework I will be attempting to discover what affects the digestion of starch. There are four main factors that affect the digestion of starch. 1. Temperature of the solution 2. PH of the solution 3. Surface area of the starch...
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Now is the time when your bones are taking in the most calcium. Half of your adult bone mass is formed during your teen years. Get calcium predominately from low-fat milk, yogurt and cheese. Keep exercising to build strong bones. If you skip breakfast, your brain is like a...
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