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iRubric: Exp01:Thin Layer Chromatography rubric

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Exp01:Thin Layer Chromatography Rubric Code: GXBC64B Ready to use Public Rubric Subject: Chemistry Type: Assignment Grade Levels: Undergraduate

Prelab Assignment Descriptions Notebook Pages
	Outstanding 2 pts	Satisfactory 1 pts	Incomplete/Unsatisfactory 0 pts	Ignore 0 pts	Ignore (N/A)
Criteria	Outstanding -Title, date, name on each page -Table of Reagents: should include chemical properties (structure, mw, density, mp/bp), safety, and disposal) -Procedural Outline -Other necessary disposal comments -Answered Prelab Questions	Satisfactory Minor missing or incomplete parts listed in “Outstanding”	Incomplete/Unsatisfactory • Prelab was not complete before lab • Missing ½ or more parts listed in “Outstanding”	Ignore	Ignore
In Lab Notebook Pages
	Outstanding 3 pts	Satisfactory 2 pts	Unsatisfactory 1 pts	Incomplete 0 pts	Ignore (N/A)
Criteria	Outstanding •Need to show different TLC plates from different solvent systems tested. •Overall conclusion on which solvent system worked best. •Conclusions should reflect their results from TLC plates. •Show calculated Rf values. Rf calculations are only necessary for their best solvent mix.	Satisfactory Missing ONE of the topics listed below: • Did not draw all TLC plates in notebook OR • Results do not match with conclusions OR • Did not calculate Rf values	Unsatisfactory Missing TWO of the topics listed below: • Did not draw all TLC plates in notebook • Results do not match with conclusions • Did not calculate Rf values	Incomplete Missing All of the topics listed below: • Did not draw all TLC plates in notebook • Results do not match with conclusions • Did not calculate Rf values	Ignore
Postlab Questions Typed Discussion-questions are worth 1 pt each and graded for correctness.
	Outstanding 5 pts	Satisfactory 4 pts	Fair 3 pts	Unsatisfactory 2 pts	Incomplete 1 pts
Criteria	Outstanding All questions were answered correctly.	Satisfactory Only 4 questions were answered correctly.	Fair Only 3 questions were answered correctly.	Unsatisfactory Only 2 questions were answered correctly	Incomplete All questions were answered, but were incorrect.