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iRubric: Stoichiometry rubric

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Stoichiometry

Rubric Code: S228X9B

By mderby1

Ready to use

Public Rubric

Subject: Chemistry

Type: Assignment

Grade Levels: Undergraduate

Stoichiometry 100 % Student is able doing various stoichiometric problems in chemistry
	needs improvement 0 pts	poor 30 pts	Fair 35 pts	Good 40 pts	Excellent 50 pts
Balance equation 25 % Student is looking at balancing an equation involved in the stoichiometry of a bath bomb.	needs improvement could not tell if balanced and could not balance equation	poor could say if balanced but not correctly and if not balanced when try to balance could not correctly balance	Fair Could say if equation is balanced or not tried to balance equation but only one in the balancing	Good Could say equation is balanced or not and if not could partially balance the equation	Excellent Could say if equation is balanced and able to correctly balance if it was not
Molecular weight of products and reactants 12.5 % Student is finding mw of individual compounds involved in a bath bomb	needs improvement no molecular weights were attempted	poor Found correct molecular weight for 1 of the four below and showed work: Citric Acid (C6H8O7) : Sodium Bicarbonate ( NAHCO3) Sodium citrate (Na3C6H5O7) Water (H2O) Carbon dioxide (CO2)	Fair Found correct molecular weight for 2 of the four below and showed work: Citric Acid (C6H8O7) : Sodium Bicarbonate ( NAHCO3) Sodium citrate (Na3C6H5O7) Water (H2O) Carbon dioxide (CO2)	Good Found correct molecular weight for 3 of four below and showed work: Citric Acid (C6H8O7) : Sodium Bicarbonate ( NAHCO3) Sodium citrate (Na3C6H5O7) Water (H2O) Carbon dioxide (CO2)	Excellent Properly found MW and showed work for the following: Citric Acid (C6H8O7) : Sodium Bicarbonate ( NAHCO3) Sodium citrate (Na3C6H5O7) Water (H2O) Carbon dioxide (CO2)
Moles of citric acid 12.5 % students is finding the moles of citric acid when grams is given	needs improvement no attempt was made to do the moles of citric acid	poor attempted to find moles of citric acid but not correct and no work was shown	Fair attempted to find the moles of citric acid but not correct and work was shown	Good Properly found the moles of citric acid but no work was shown	Excellent Properly found the moles of citric acid and showed work
moles of sodium citrate 12.5 % student is finding moles of sodium citrate	needs improvement no attempt was made to do the moles of sodium citrate	poor attempted to find moles of sodium citrate but not correct and no work was shown	Fair attempted to find the moles of sodium citrate but not correct and work was shown	Good Properly found the moles of sodium citrate but no work was shown	Excellent Properly found the moles of sodium citrate and showed work
grams of sodium citrate 12.5 % student is finding grams of sodium ctirate	needs improvement no attempt was made to find the grams of sodium citrate	poor attempted to find grams of sodium citrate but not correct and no work was shown	Fair attempted to find the grams of sodium citrate but not correct and work was shown	Good Properly found the grams of sodium citrate but no work was shown	Excellent Properly found the grams of sodium citrate and showed work
moles of sodium bicarbonate 12.5 % student is using stoichiometric methods to find moles of sodium bicarbonate	needs improvement no attempt was made to do the moles of sodium bicarbonate	poor attempted to find moles of sodium bicarbonate but not correct and no work was shown	Fair attempted to find the moles of sodium bicarbonate but not correct and work was shown	Good Properly found the moles of sodium bicarbonate but no work was shown	Excellent Properly found the moles of sodium bicarbonate and showed work
grams of sodium bicarbonate 12.5 % student is using stoichiometric methods to find moles of sodium bicarbonate	needs improvement no attempt was made to do the grams of sodium bicarbonate	poor attempted to find grams of sodium bicarbonate but not correct and no work was shown	Fair attempted to find the grams of sodium bicarbonate but not correct and work was shown	Good Properly found the grams of sodium bicarbonate but no work was shown	Excellent Properly found the grams of sodium bicarbonate and showed work

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Chemistry

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