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osmosis in potato course work. What affect does concentration of solution
have on potato tissue? In my preliminary investigation, I ...
... the potato cell, would cause the potato sample to ... used were the laws and rules of
osmosis and diffusion. ... of general good quality (except, of course, for the ...
... low (0% and 5%) then the mass of the potato chips increased during the course of
the ... also had a higher water potential and osmosis occurred through ...
... in first public demonstration 1952 Mr. Potato Head invented ... OSMOSIS JONES , THE PRINCE
OF LIGHT , SHREK , THE ... is used in conjunction with a course at Ohio ...
Submitted by leenakhan88 on January 19, 2007
Category: Science
Words: 2015 | Pages: 9
Views: 453
Popularity Rank: 18,670
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What affect does concentration of solution have on potato tissue?
In my preliminary investigation, I will be controlling the following variables:
• length of potato cylinder;
• amount of solution / water;
• type of potato;
• size of potato;
• temperature of water;
• same ruler / person.
Changing the concentration of solution:
Using three glass test tubes, I will set up the following configuration:
• Test tube 1 - Distilled water;
• Test tube 2 - 5% salt solution;
• Test tube 3 - 10% salt solution.
All quantities will be made the same and accurately measured to ensure a fair test.
I will accurately cut three pieces of potato chip (40mm / 4cm), each one the same length. Each chip will then be inserted into each test tube simultaneously. I will then leave them in the test-tube for twenty minutes, take each out simultaneously and then record the difference in length for each chip.
After conducting my preliminary experiment, I have recorded the following results:
To improve the reliability / accuracy of my preliminary investigation, I could make the following changes:
• not using the same cylinder to measure out the different water solutions;
• calculating the mass change in the potato chip, by measuring both length and width of the potato chip;
• calculating a value.
I am investigating what effect changing the external concentration of a solution has on potato tissue. I have carried out a preliminary result and will now repeat the experiment with an improved method after reviewing the flaws discovered in my preliminary experiment.
There are several variables I can control in order to get a different outcome to my experiment:
• temperature of the atmosphere in which the investigation takes place;
• surface on which the investigation takes place;
• length...
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