Unknown Sample Analyses Most experiments will involve the analysis of the chemical composition of an unknown sample. The grading for the unknown is based on the accuracy of the analysis, so it is in your best interest to know the procedure beforehand, follow instructions, and carry out the analysis as carefully as possible. Grading for Unknowns Exp. 2, 3, 6, 8, 9 Exp. 4, 5, 7, 10, 11 Points 0.00-0.99% 0.00-1.99% 40 1.00-1.99% 2.00-3.99% 38 2.00-2.99% 4.00-5.99% 36 3.00-3.99% 6.00-7.99% 34 4.00-4.99% 8.00-9.99% 32 5.00-5.99% 10.00-11.99% 30 6.00-6.99% 12.00-13.99% 28 7.00-7.99% 14.00-14.99% 26 8.00-8.99% 15.00-15.99% 24 9.00-9.99% 16.00-16.99% 20 10.00-10.99% 17.00-17.99% 16 11.0-11.99% 18.00-18.99% 12 12.00-13.60% 19.00-20.60% 8 >13.60% >20.60% 6 Note: Scales may be adjusted based on performance or extenuating factors. This is solely at the discretion of the instructor and GTAs. Grade distribution will be as follows: Lab Notebooks and Pre-Lab Questions- 15 pts per lab x 8 = 120 pts total Lab reports- 75 pts per lab x 8 = 600 pts total Participation- 10 pts per lab x 8 = 80 pts total Final Exam- 100 pts x 1 = 100 pts total Total points = 900 points
Unknown Sample Analyses Most experiments will involve the analysis of the chemical composition of an unknown sample. The grading for the unknown is based on the accuracy of the analysis, so it is in your best interest to know the procedure beforehand, follow instructions, and carry out the analysis as carefully as possible. Grading for Unknowns Exp. 2, 3, 6, 8, 9 Exp. 4, 5, 7, 10, 11 Points 0.00-0.99% 0.00-1.99% 40 1.00-1.99% 2.00-3.99% 38 2.00-2.99% 4.00-5.99% 36 3.00-3.99% 6.00-7.99% 34 4.00-4.99% 8.00-9.99% 32 5.00-5.99% 10.00-11.99% 30 6.00-6.99% 12.00-13.99% 28 7.00-7.99% 14.00-14.99% 26 8.00-8.99% 15.00-15.99% 24 9.00-9.99% 16.00-16.99% 20 10.00-10.99% 17.00-17.99% 16 11.0-11.99% 18.00-18.99% 12 12.00-13.60% 19.00-20.60% 8 >13.60% >20.60% 6 Note: Scales may be adjusted based on performance or extenuating factors. This is solely at the discretion of the instructor and GTAs. Grade distribution will be as follows: Lab Notebooks and Pre-Lab Questions- 15 pts per lab x 8 = 120 pts total Lab reports- 75 pts per lab x 8 = 600 pts total Participation- 10 pts per lab x 8 = 80 pts total Final Exam- 100 pts x 1 = 100 pts total Total points = 900 points