2 PART A BEFORE: In the beaker = iodine (Lugol’s solution) In the bag = starch + glucoseAFTER 30 MINUTES: see picture belowIn and out of bagGlucose found in and out of bagStarch stayed in the bag
3 Table 1.1 p. 2 Presence of Glucose Initial Contents Solution Color FinalBag15%glucose+1% starchclearBlue-black+BeakerWater and iodineStraw yellow-Presence of Glucose
4 Part B6 dialysis tubes were filled, each with a different concentration of sucrose from 0.2 M to 1.0 MThey were placed in cups of distilled water. Wait 30 minutes. Mass the bags.0.8M1.0Mdistilled0.6Mdistilleddistilleddistilleddistilled
5 Part B Table 1.2 Copy the data from your lab mates. Table 1.3 You need to copy the group data from your period. It is posted on the chalkboard above the hood by the turtle tank.You will then calculate the class average.
6 GRAPH 1.1 Graph on the X-axis: the concentrations of sucrose Graph on the Y-axis: the class average % difference(see chart above)
7 Part C: Potato CoresMass two potato cores and place in different sucrose solutions from 0.2 M to 1 M.
8 Example of Group Percent Change in Mass p. 11 Class Average Table 1.3b: Water Potential of Potato Cores (Class Data)Sucrose Concentration (M) Percent Change in Mass
9 Graph 1.2Molarity is where the line crosses the O line