These consist of the completion of the laboratory experiment write-up. Although the
experimental and observational work may be done with a lab partner or partners, the lab
report is an individual’s work.

Not all the answers to the questions will be found in your notes from the actual
experiment.  You will have to do a little research in your text, class notes, or other
reference books to complete most lab reports.

As you do each investigation you are also preparing a written report. It is very important
that you collect accurate data. You should record all your own data and observations
immediately and carefully. “My partner is absent and he/she has the data,” is not a valid
excuse for not handing in your report on time.

Lab reports that are complete and handed in on the due date will start with a grade of
100%

No lab reports will be accepted FOR FULL CREDIT after a due date.  The grade received
on late lab reports will be reduced 10% for each day late.

Incomplete lab reports will be returned to the student to be rewritten.  Incomplete lab
reports will be considered late lab reports.

EVALUATION OF LAB REPORTS

All lab reports are due the first class meeting after completion of the actual lab, unless a
different due date is indicated by the teacher. All lab reports must be validated with the
instructor’s date stamp in the upper right hand corner.

They must be neatly written in
blue or black ink or typewritten.  

Graphs when applicable must be done on graph paper. The original lab procedure
handout should be kept for future reference in your laboratory notebook.

Lab reports will be checked for completeness and graded and then be placed in your
individual lab portfolio, which will be kept in the science department office.  

Incomplete labs and labs that receive a grade of less than 65% will be returned to be
rewritten.

LAB REPORT SCORING RUBRIC

WRITTEN LAB REPORT FORMAT

All reports must begin with a title page that has the Lab #, Title, Student’s name, and
Teacher’s Name. The most original title page in each class will be awarded a free
homework certificate.

All lab reports must be written using the proper format.  The following represents a written
report with all possible components.  (Not all labs will require graphs or data tables.)
1. INTRODUCTION: -- (what we know, think, and are going to do)
    •Explains what is being studied.
    •States hypothesis.
    •Explains why this is our hypothesis.
    •Includes background research and references

2. PROCEDURE: -- (a recipe, others could follow without further instructions and get the
same results).
    •Explains how the data was collected
    How often (time and spatial)
    Equipment/software/hardware used
    Important dates, times, locations, etc.
    Sources
    o Includes sketch of the setup/data collection area
    o Explains how data was plotted, graphed, mapped, drawn, sketched,
    etc.

3. DATA: -- (numbers, graphs, and calculations).
    •The data is included (if the database is large, it is printed out and attached as
    an appendix)
    o Tables: Must have the title for each column; the units listed in
    parentheses.
    •All calculations are shown.
    •All graphs are included.
    o Graphs: Must have axis labels; with units; titles where necessary; if
    plotted by hand have point protectors; if printed out have an estimated
    scale.

4.RESULTS: -- (What did you find?)
    •Statistical data (means, percentiles, standard deviations, COR, slopes, etc.)
    are included
    •Model(s) with scientific variables are included
    •Patterns in data are recognized and described; key points highlighted and
    discussed
    •Accuracy/statistical/probability/residual analysis is discussed

5.CONCLUSION: -- (brainwork, analysis, creativity)
    •Discussion: discuss your hypothesis in light of your data (were you correct,
    incorrect)
    •Theory: create a model and or theoretical explanation of why the phenomena
    you studied behave the way they do (think theory and be creative)
    •Where do we go from here? Describe the next possible directions for study.
    Does this study need to be redesigned? If so, how? What similar topics should
    be studied? What new questions does this raise?

•Tips: Always use the section headings in bold. Set them off by indenting, underlining,
skipping lines etc. You may create subheadings when necessary. It is not necessary
to create subheadings for the three areas of the conclusions, although this may be
helpful.
Chemistry Honors Lab Report
Created by
C. Ippolito
February  2001

Updated
May 2011