What are the safety precautions for the osmosis RP?
Handle the cork borer and scalpel with care
Why is it necessary to blot the cylinders with paper after removing them?
Each cylinder may have a different amount of water on its surface, so masses may vary, blotting makes them comparable
How would you carry out an investigation into osmosis using potato tissue?
Cut identical potato cylinders using a cork borer, measure and record the length and mass of the cylinders using a ruler and a balance. Add each cylinder to one of the three solutions: 1M sugar solution, 0.5M sugar solution and distilled water. Leave the cylinders in tubes overnight, remove the cylinders and blot them, record the length and mass and draw a graph to show the changes in mass
