Osmosis

Below is a short sample of the essay Osmosis. If you sign up you could be reading the rest of this essay in under two minutes. Registered users should login to view the essay.

Osmosis

In my experiment, I plan to find out whether the concentration of sugar in water
affects how much water will go in to a potato chip. I will do this by having
twelve test tubes three with one molar of sugar solution, three with ½ molar
sugar solution, three with ¼ molar sugar solution and three with zero molar
sugar solution. I will do three of each so I can take an average from the
results. Prediction For the investigation I think that the lower the
concentration of sugar in the test tube the larger mass the potato chip will be.
I think this because I know that Osmosis is the movement of water molecules
across a partially permeable membrane from an area of high water concentration
to an area of low water concentration. Therefore the water molecules pass from a
high concentration (in the water itself) to a low concentration (in the potato
chip). Therefore, the chips in higher water concentrations will have a larger
mass than in higher sugar concentrations. Diagram For Prediction This is a
diagram for what I predict will happen in the experiment. If the potato is in
one Molar solution then the increase in mass due to osmosis will be little, as
there is more sugar than water in the solution. If it is in 0.5 Molar solution,
it should increase a little. If it is in pure water then the increase will be
quite a lot, as there are many water molecules in water, therefore due to
osmosis its mass will increase more that the other two experiments. Fair Test In
the investigation, I will make it a fair test by keeping the following things
the same: 1. Volume of solution – 20ml 2. Same size boiling tube 3. Same type
of potato 4. Temperature – Room Temperature 5. Same sugar solution 6. Same
size potato borer 7. Time left for – 48hrs 8. Size of potato chip – 20mm For
all of these criteria, having them not uniform in all of the tests would mean it
would not be a fair test. For instance if I had a longer potato the surface area
would be bigger and there would be more space for osmosis to occur. Apparatus To
do this test I will need – 1. Twelve test tubes 2. Sugar solution 3. Water 4.
Twelve potato chips 5. Size 5 borer 6. Ruler 7. Two test tube racks 8. A Knife
Diagram These are diagrams of how the apparatus is used. This first one is about
boring the holes in the potato This one is the potato chip in the water
solution. Method 1. Take about two or three potatoes and bore twelve potato
cylinders out of them using borer siz...

The complete article is about 904 words and 3.62 pages long.

To continue reading the complete article, subscribe below and get free instant unlimited access.

Once you have registered for an Account, No refunds can be issued.
Please make sure you look over the site before you purchase an account!!!