| |
Beginning (0) |
Developing (2.6) |
Adequate (3) |
Accomplished (3.4) |
Mastery (4) |
| Organization |
Did not read the experiment prior to class. No preparation in the laboratory notebook for the experiment. No idea what equipment or chemicals are required. |
Experiment scanned/not completely read prior to class. No preparation in the laboratory notebook for the experiment. Student has some idea of required chemicals and equipment. |
Experiment read prior to class. Laboratory notebook contains experiment title /purpose/key reaction. Student has basic idea of required chemicals and equipment. |
Experiment thoroughly read prior to class. Laboratory notebook contains title/purpose/key reaction/completed table of reagents. Good understanding of required chemicals and equipment. |
Student has prepared detailed outline of experimental procedure. Glassware is clean and ready to be assembled. Laboratory notebook is prepared to receive experimental data. |
| Safety |
Student is not appropriately dressed for lab. Student requires multiple verbal reminders to wear safety glasses. Apparatus/glassware/ chemicals setup or utilized in unsafe manner. |
Some clothing unsuitable- loose/baggy. Requires more than two verbal reminders regarding safety glasses. Consistent/numerous errors in utilization of glassware/apparatus/chemicals. |
Appropriately dressed for lab. Requires only single reminder regarding safety glasses. Consistently asks for assistance to avoid errors in utilization of glassware/apparatus. |
Appropriately dressed for lab. Rarely requires reminding about safety glasses. Occasionally asks for assistance to avoid errors in utilization of glassware/apparatus. |
Appropriately dressed for lab. Never requires reminder to wear safety glasses. Consistently utilizes glassware and other equipment correctly. |
| Chemical Hygiene |
Work area and drawer look like a toxic dump - uncleaned chemical spills, multiple unlabeled samples/reagents/reactions. Glassware put away dirty and simply thrown in drawer. |
Work area looks dirty and cluttered. Some containers not labeled containing samples/reagents/reactions. Drawer is disorganized/cluttered with many items needing to be cleaned. |
Work area clean but somewhat disorganized/cluttered. All containers labeled in some fashion. Drawer is disorganized/cluttered with few items needing to be cleaned. |
Work area is clean and organized. All containers labeled properly including samples/reagents/reactions. Glassware is put away clean but drawer disorganized. |
Work area is neat and organized. Spills are attended to timely. All containers are properly labeled including samples/reagents/reactions. Glassware is put away clean and organized. |
| Laboratory Procedure |
Laboratory procedure not properly followed. Chemicals are used in wrong amount, incorrect order of addition, steps followed in incorrect order, wrong reagents used. |
Laboratory procedure generally followed but with one or more significant errors requiring student to restart from beginning more than once. |
Laboratory procedure generally followed but with one or more significant errors requiring student to restart from beginning no more than once. |
Laboratory procedure generally followed with minor errors not requiring student to restart procedure from beginning. |
Laboratory procedure followed perfectly. |
| Product |
Product not obtained/failure to complete lab or product obtained in a yield significantly below that of the class average. Product obtained with low purity- melting/boiling point significantly off. |
Product obtained in a yield somewhat below class average. Product obtained with lower purity within ±10 oC of expected melting/boiling point. |
Product obtained in a yield consistent with class average. Product obtained with reasonable purity within ±7 oC of expected melting/boiling point. |
Product obtained in a yield somewhat above class average. Product obtained with good purity within ±5 oC of expected melting/boiling point. |
Product obtained in a yield significantly above class average. Product obtained in high purity as demonstrated by melting/boiling point and/or spectroscopy. |