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Investigating the concentration of the solutions inside the vacuole of
a potato cell. Osmosis Investigation We are trying to find ...
... Investigating the water potential of a potato Aim Osmosis ... can be seen that as the
concentration of the ... could have been possible that the solutions were placed ...
Investigating The Rate Of Reaction Between Peroxydisulphate (Vi ... reaction in which
two colourless solutions are mixed ... will be of a small concentration, and will ...
... put the potato chips into the solutions, because it ... result was for the test with
0.1 molar concentration. ... I could extend this AT1 by investigating osmosis with ...
... I am investigating what effect changing the external concentration of ... chip) to an
area of low concentration (into the ... out in all the salt solutions, whereas in ...
Submitted by edde9 on July 13, 2005
Category: Science
Words: 1489 | Pages: 6
Views: 283
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Osmosis Investigation
We are trying to find out what the concentration of the solutions is inside the vacuole of a potato cell.
We will investigate how the mass of the potato chips change in different sucrose solution concentrations.
We will use osmosis to do this.
I will be measuring and controlling many different variables, these include; -
The dependent Variable – Weight of potato chip
Independent Variable – Concentration of sucrose
Control Variables consist of; -
1. Temperature
2. Surface area of potato
3. Volume of sucrose solution
4. Same time for each potato chip submerged in solution
5. Potato chips all from same potato
The effects on the dependent variables all differ; here is how the main variables in my experiment work out.
Variable Effect on Dependent Variable
Surface area of potato chip The greater the surface area the more water it will be able to absorb
Same chip from the same potato The genetic make-up will be the same and therefore the partly permemble membrane will be similar
Time left in the solution The longer spent in solution the more that is absorbed
Coating on the potato chips If not rinsed off and dried after a certain period of time the chips will form a coat of sugar thus decreasing surface area
Quantitative prediction
I predict that the effect of changing the sucrose concentration will be that as the concentration of the sucrose solution increases, first of all the mass of the chip will increase, and then the change in mass will gradually decrease until mass is lost and this mass loss will gradually increase in amount.
Because when the sucrose...
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