How does cutting one potato in half help control the variables in this experiment?
If you use both halves, then it removes the variables of differing weights/sizes, and shapes.
What was the independent variable in the potato experiment?
What are the independent and dependent variables in this experiment? The independent variable in this lab is the sugar concentration of water int he bucket. The dependent variable is the change of weight of potatoes.
Why does the potato increase in mass?
The water passes through the potato cell membrane (a partially permeable membrane) into the potato, making it swell and increase in mass.
Why does the potato in 0.0 sugar solution increase in mass?
The water passes through the potato cell membrane (a partially permeable membrane) into the potato, making it swell and increase in mass. If there is more sugar in the surrounding solution than the potato sample, the reverse happens.
Is water isotonic to potato?
The potato sap has little solutes, and therefore it is hypotonic while the salt solution has more solutes. This is because the solution is isotonic, that is, all solution s have attained the same concentration, and there is no net movement of water molecules from one solution to another.
What was the hypothesis of the potato battery experiment?
Potato Battery Experiment Hypothesis The Hypothesis for this experiment is that the juices in potatoes contain chemicals which can facilitate electricity generating chemical reactions with the help of electrodes.
How does the juice of a potato work as a conductor?
The potato as a whole becomes the cell casing, its juice works as a conductor or electrolyte, allowing the flow of charged ions, and the phosphoric acid naturally present in potatoes provides the hydrogen ions (H+) for the chemical reaction.
How does water enter the sugar solution of a potato?
Though both the liquids are divided by living cells of the potato tuber, they allow the entrance of water into the sugar solution. This demonstrates the entrance of water into the sugar solution through the tissues of potato serving as a selectively permeable membrane.
Why does osmosis take place in a potato tuber?
It is because of the entrance of water due to endosmosis from the beaker. Also, a water potential gradient is built between the sucrose solution in the external water and the osmometer. Though both the liquids are divided by living cells of the potato tuber, they allow the entrance of water into the sugar solution.
