writing a lab report for physical chemistry lab. " speed of sound in different gases"

Rubric for Speed of sound (SOS) CHM 343- Fall 2018 The “report” is based upon 100 Pts, but 40 pts are given for participating in the performance of the experiment and group analysis of the data. 20 pts will be deducted if you did not participate in the

measurements, and additional 20 will be deducted if you did not participate in the analysis. Writing a “perfect” lab report will only receive 60 pts if you did not participate in the measurements and did not participate in the data analysis. Attendance and participation in lab is required.

Woefully inadequate Competent Proficient Exemplary

Abs. and

Title (5 pts)

Points: 0

Too Brief, or totally

missing

Points: 2

Missing key points of

experiments & values

and associated errors

Points: 3 Missing determined

values for  and associated

errors for 3 gases

Points: 5.0 Succinct description of the experiment performed. Gives

determined values for  and associated errors for 3 gases

Intro.(15 pts) 0-5 Pts. Has some

verbiage but is Omits

or insufficiently

addresses most

points.

5 Pts. Omits or

insufficiently addresses up

to 3 of the 6 points

8Pts. Omits or insufficiently

addresses up to 2 of the 6

points

15Pts. Address the following 6 points (Full writing)

1) “what” was measured (i.e.  for 3 gases)

2) “why” measure (i.e . uses ..; related to CV, etc.); “Bigger picture” example

3) “how” (Fourier transform of standing waves sound frequencies,)

4) key equations for analyzing data

5) Eqs. relating  to CV and Eq. partition and Stat mech. models

6) Bigger Picture Example using the one reference provided

Exp. (5Pts) 0Pts. Total omits 3Pts. Omits or

insufficiently provides

data -major

4Pts. Omits or insufficiently

provides data -minor

5Pts. Contains/addresses the following (Full writing)

Write a full procedure of what you did in the lab includes a list of manufacture &

model of equipment and software used.

Obs. (10 pts) 0 Pts. Missing both

points

2 Pts. Missing or

partially missing both

points -major

3Pts. Missing or partially

missing both points -minor

10Pts. Includes the following (Table/Form)

1) one example of sound spectrum (Attached as an appendix)

2) A table listing the first 10 resonate frequencies for each gas at all temps. (i.e

5 data sets).

3) An example of Logger pro output for one of the fits attached as an

appendix.

Anal.&

results

(10Pts)

0 Pts. Missing all4

points

3-8Pts. Missing or

partially missing 1 of

the 4 points-major

8Pts. Missing or partially

missing 1 of the 4 points-

minor

10 Pts. Includes the following (Table/Form, Table 1)

1) Optimized fitting parameters and associated error the 3 gases at all temps.

2) Table with the determined speed of sound for the 3 gases at the various

temp. and associated error.

3) Converts obs. “c”   and assoc. err. assuming idea gas behavior.

4) Converts obs. “c”  and assoc. err. assuming VdW behavior

Discussion

(10Pts)

0-5 Pts. Missing

partially missing up to

8 of the 9 points

5Pts. Missing or

partially missing up to 4

of the 9 points

8 Pts. Missing or partially

missing up to 2 of the 6 points

10 Pts. Includes the following (Table/Form, Table 2)

1) Uses  values to predict Cv and assoc. error.

2) use Equitation theory to predict Cv

3) use Stat. Mech. Theory to predict Cv

4) tabulate results “1-3” (Table provided on Blackboard see lecture # 2)

5) discuss sources of system and random error (for your thought process only)

6) compare with literature

Ref & Appen.

(5 pts)

0 Pts. Totally missing 2 Pts.

No example sound

spectrum attached

3pts.

Refs. Not in ACS Journal

format

5 pts.

Contains ref. in an ACS journal format

Has appendices that contain example sound spectrum and fitting (loggerPro)

60 Pts total