Lab skills are critical. Working with confidence with and taking care of your equipment is a skill that must be transferred to other areas of your life. Biology students in grade 11 extracted chlorophyll from leaves using some solvents. We also attempted a chromatographic separation that did not go as well as we hoped. We’ve got a test next week but we will redo the separation part of the lab using different solvents and a different grade of chromatograph paper.