to pass through it, but not allow sucrose molecules to pass through it? What do • Briefly consider how this is possible - how can a membrane allow water molecules In the simulation, you will measure...

Extracted text: to pass through it, but not allow sucrose molecules to pass through it? What do • Briefly consider how this is possible - how can a membrane allow water molecules In the simulation, you will measure the mass of the tubes before placement into the solutions, and then measure their mass again after 24 hours in the solutions. These two eable) to sugar (sucrose).. you know about the chemical structures - and relative sizes - of water and sucrose? measurements will allow you to calculate the change in weight. As mentioned above, the dialysis tubing is permeable to water and impermeable to sucrose. Keeping this in mind, what is your interpretation of the change in uhe weight of the dialysis tubes after 24 hours in the solutions? In other words - what is moving into or out of the dialysis tubes to cause the change in weight? Based on your answer to the above question, is this simulated lab a demonstration of diffusion or osmosis? Record the data you get from vour simulation's experiment in the following table: 1) Concentration Concentration of of sugar in the dialysis tube 3) Dialysis tube starting mass (g) 4) Dialysis tube ending mass (g) 5) Change in tube mass 2) Sample sugar in the beaker solution (g) (column 4-3) control 17,5A 17.66 0.07 o %. 10 % 10% 10% 10% A \o. 40 l 1.65 12.10/0.86 10.57 |-0.1t 18-05 15.60 -2.45 0%. 8-15 ら7. |1.24 C 10% 15% 10.71 E When you are finished, make a graph of your data to show the relationship between the concentration of sugar in solution and change in mass. Reflection Questions • What hypothesis is being tested by this "experiment"/demonstration? What is the independent variable? • What is the dependent variable? Are these variables qualitative or quantitative? 4


Extracted text: In which sample[s] was the beaker solution initially hypertonic to the solution in uhe dialysis tubing? In which sample[s] was the beaker solution initially hypotonic to the solution n die dialysis tubing? in which sample[s] was the beaker solution initially isotonic to the solution in the dialysis tubing?