Name___________
Group____________
Grading Rubric for Moles Iron and Moles Copper
0
Title (1x) 1
Purpose
(0.5 x) 1
Safety (1x)
(**only if “extreme
caution” required)
Hypothesis
(1x) 1
Materials
(2X) 2
Procedure
(weighting lab
dependent)
(1x) 3
Data and
Observations
Missing
Not clearly stated or
not in sentence form.
Clearly stated in
sentence form.
Incomplete or
paraphrased
Stated verbatim from
specific safety
instructions.
Missing or not
applicable
Missing
Included
Missing
Materials included in
list form.
Missing or copying of Major omissions or
laboratory instructions errors. Inability to
verbatim.
follow the procedure.
Steps are not
numbered.
Missing
(2x) 6
Graphs (each)
Missing or not
applicable
Sample
Calculations
(0.75x) 11.25
Missing or not
applicable
Conclusions
(1X) 3
2
Included
(weighting lab
dependent)
Error
Analysis (2x)
6
Questions
(each) (0.5x)
6
1
Missing
Some data missing or
obviously incorrect.
Significant figures
and/or units may or
may not be used
correctly. Either
qualitative or
quantitative data table
missing.
Incorrectly drawn,
axes may or may not
be correctly drawn
Calculation and/or
formula shown is
incorrect or has no
relation to your data.
Some ambiguity or
minor omissions, but
procedure can still be
followed. Each step
is numbered.
Data complete, but
significant figures
and/or units are not
used correctly. Both
qualitative and
quantitative data table
provided.
Correctly drawn, but
axes not clearly
labeled or missing
title.
Units and/or
significant figures not
correct, or labels
missing.
3
Clearly and completely
described in complete
sentences. Each step
is numbered and
reflects what student
did.
All data complete,
with the correct use of
significant figures and
units. Both qualitative
and quantitative data
table provided.
Correctly drawn,
includes title and
clearly labeled axes.
Clearly labeled with
formula and example
shown. Units and
significant figures are
correct.
Missing or not
No calculations or
Calculations missing
Well thought out,
applicable
values, or more than
but values given, or one written in paragraph
one major source of
major source of error
form. Calculations
error not accounted for. not accounted for.
shown.
Answers incorrect or No work shown and/or Work not shown, but
Completely answered
missing.
incorrect value given,
correct value given, or in sentences. All work
with major errors.
minor calculation error. shown for
Answers correct, but
calculations.
not in sentences.
Missing
Not well thought out, or Well thought out,
Well thought out,
not in paragraph form. written in paragraph
written in paragraph
form. Only one
form. Multiple
paragraph.
paragraphs that clearly
summarize the lab
experience.
Calculations:
Calculation
1. Mass of iron lost by the
nails
1. Number of moles of iron
used in the reaction
2. Mass of the solid copper
product
3. Number of moles of copper
produced
4. Mole ratio of iron used to
copper produced. (Expressed
as whole-number ratio)
5. Theoretical mass copper
Error analysis section:
Error (copper)
% Error (copper)
Error analysis:
Please provide the calculations for and discussion regarding amount of copper collected.
Questions:
1. a. What evidence do you have that a chemical reaction occurred?
b. How do you know iron was used in the reaction?
c. How do you know copper was produced in the reaction?
2. Explain how you experimentally determined the mole ratio of iron:copper.
3. How can you use your experimental mole ratio to determine the correct balanced chemical
equation for the reaction between iron and copper (II) chloride?
4. Please provide the two balanced chemical equations (as determined in class) and then
determine the mass of copper that should have been produced. [mass : mass]
Conclusion: (As per rubric)