AP Investigation #4: Diffusion & Osmosis Teacher’s Guide – Answer Key
Kit # 36-7404
Data Tables (continued) This table includes actual data from this lab. Your students’ data will vary somewhat.
Part 3: Osmosis in living plant cells Potato Cylinders Initial Mass (g)
Final Mass (g)
Change in Mass (g)
% Change in Mass
Water
1.5
2.1
+0.6
+28.6
Mystery Red
1.5
1.6
+0.1
+6.3
Mystery Orange
1.5
1.3
-0.2
-15.4
Mystery Yellow
1.5
1.2
-0.3
-25.0
Mystery Green
1.6
1.1
-0.5
-45.5
Mystery Blue
1.5
0.9
-0.6
-66.7
Solution
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