Sinhgad Colleg of Engineering Chemistry Lab Report

Individual Pre-Laboratory Planning RubricStudent’s Name:
Project Number, Project Title, Week of Experiment:
Group Number or Name:
Objective: A clear statement of the overall purpose for performing the experiment, i.e. what is / are the goal(s)
to be achieved and what idea(s) are you to learn during the duration of the project?
Materials: Write all equipment or glassware with specific sizes needed
Chemicals / Safety: Include important safety information regarding all chemicals that may be used during that
week. Be sure to include molecular weight of each chemical. SDS information can be found online or in the
folders available in each lab. Your Canvas course site has guidelines about how to read the SDS forms. Please
find and record the SDS information from these sections of the SDS form:



Section: 2 (Hazard(s) Identification)
Section: 7 (Handling)
Section: 8 (Personal Protection)
Point Distribution – Individual Pre-Lab Planning:
Title
Objective
Materials
Chemicals / Safety
Total
1 point
2 points
3 points
4 points
10 points
General Chemistry I Lab Report Rubric – Project 1: Inorganic salts present in water samples
Sections
Sub-Sectious / Descriptions
Requirements
Total
Describe why it may be necessary to
identify unknown chemicals in day-to-day
life with specific examples.
Background: A summary of a real-world
example(s) and/or application(s) that The example(s) and / or application(s)
affirm the importance / help introduce the provided should demonstrate
chemistry of this lab.
Research context for the problem (9)
/ 10
and/or question(s) the experiment
Note: Do not use the examples in the
seeks to address
laboratory manual If included in your
laboratory report, no credir will be hyn
– Relate the problem to scientific theory.
ie the qualitative quantitative tests.
Explain how and why this research is
important to conduct in the laboratory
Concepts that can be included but are not
limited to:
Qualitative Quantitative analysis
-Solubility
-Conductivity
-PH
-Flame test
-Gravimetric analysis
-Volumetric analysis
The overall goal of this section should be
to help familiarize your readers (who may
be non-scientista) with the topics you
have introduced and the importance of
Theory: Provide an overview of the key
scientific concepts/theories that explain
how the experiment works
Introduction
710
your work
Hypothesis: A hypothesis should
logically express what the researcher
thinks the overall outcome of the lab
should be
Hiwothesis: From the physical properties
of your unknown (texture, color, etc.).
what chemical do you hypothesize your
unknown to be
Remember to include your rationale for
why you think your hypothesis is
reasonable
Objectives: Explain the objective for each
week of the experiment
– Provide a brief explanation of the
investigational method you will
execute for each objective.
/ 10
Objectives: The goal to be achieved at the
end of each part of the experiment and a
summary on how those goals will be
attained.
Methods
Part 1 Methods: This section should
contain all of the details recorded in your
notebook on how the experiments were
carried out
The two main tasks of this section are to:
/10
Describe the exact laboratory apparatus
This includes numerical details such as and laboratory procedure a researcher
mass, volume, temperature, reaction time, utilized to collected empirical data.
Mc
1.e. exact masses, volumes, glassware
Note: Each experiment should have its
(with sizes), chemicals, equipment, etc.
own appropriate subbeading
Describe the process of how to analyze
the collected empirical data.
Provide a step-by-step procedure for
-Solubility
-Conductivity
pH test
-Flame test
– Analysis of ions
The two main tasks of this section are to:
Part 2 Method: See description above.
/10
Describe the exact laboratory apparatus
and laboratory procedure a researcher
utilized to collected empirical data.
i.e exact masses, volumes, plassware
(with sizes), chemicals, equipment, etc.
Describe the process of how to analyze
the collected empirical data
Provide a step-by-step procedure for
-Gravimetric analysis, or
-Volumetric analysis
Use a table to organize the safety
information for each chemical utilized
during the course of the experiment.
Please provide all the information stated
Safany: Should contain information on the below for each chemical utilized
chemicals used in this experiment and the – Chemical Name
necessary precautions taken when using
– Chemical Formula
them
– Molecular Weight
There should also be information on any Potential Hazards
other physical hazards (ie fire, sharp
objects, etc.) and the precautions you
Safety Equipment Needed
took
Please provide safety information on all
laboratory equipment (excluding
plassware) when applicable (ex. hot plate)
Equipment Name
– Precautions Used
15
Part 1 Results: This section should
contain all of the empirical data you
obtained or calculated from the
experiment you performed.
Use a table to organize the empirical data
you collected per trial for all the tests
carried out
This includes but is not limited to:
-Initial masses
volumes
-Concentrations used prepared
Solubility
-Conductivity
-pH test
-Flame test
-Analysis of ions
The data should be displayed
appropriately, i.e. tabulated, graphed, etc.
to make it easy for the reader to refer back
to it in the corresponding discussion
section
/ 10
Therefore, each table, graph, etc. should
be numbered and titled appropriately
Results
Use a table to organize the empirical data
you collected per trial for all the tests
carried out
Part 2 Results: See description above.
/ 10
This includes but is not limited to:
– Initial masses volumes
Moles reacted
– Concentrations used prepared
Gravimetric analysis
Volumetric analysis
Theoretical yield concentrations
– Standard deviation
– Percent error
Sample calculations to include are:
– Dilution Formula. (M. – V. = M,V)
%wt solution
Results
(continued)
Calculations: Provide sample
calculations for all equations used to
amalyze your results, even for non-
obvious algebraic steps
For each type of calculation performed,
this should include the mathematical
formula and a sample calculation using
that mathematical formula
Please number each sample calculation
appropriately. to make it easier for the
reader to refer to it in the corresponding
discussion section.
/10
Preparing solutions
– Theoretical yield/concentrations
Standard deviations
Percent error
Discuss the results obtained in Results
Part 1
Compare and contrast the theory you
described in the introduction (this proves
you understand the theory)
Describe your data in detail, especially
the vital information that will help bolster
Part Discussion: This portion of the
or refute your hypothesis.
paper should attempt to explain all of the Compare the standards and the unknown
results from the experiment in Part 1 so you can formulate a strong argument to
prove the nature of your unknown.
You should also justify why certain
decisions were made when carrying out
Dom the data support your hypothesis or
the experiments Le if there were options hypotheses, why or wtey not?
for techniques to be used, compounds to Does the scientific theory behind the
be tested, etc)
experiment assist you in providing a
explanation for your resulta?
Use the value from your results to
support your arguments and compare
them to theoretical values if possible.
Tip: Use page 44 in your lab manual to
obtain literature/theoretical values for
each of your tests under Supplemental
Information links
/10
Discussion
Part 2 Discussion: See description above.
Discuss the results obtained in Results
Part 2
Does the data support your hypothesis or
hypotheses, why or wtiy not?
Use the values from your results to
support your arguments and compare
them to theoretical values if possible
Does the scientific theory behind the
experiment assist you in providing an
explanation for your results?
Utilizing your calculated standard
deviation and percent error values,
compare the efficiency of the
experimental technique you developed.
/10
Sources of Error Discuss any major
sources of error in the experiment that
may have altered the experiment’s
outcome
Discussion
(continued)
/10
Sources of Error: Include any systematic
and random errors that could possibly
influence your results
Are your results reliable?
Simply stating human error was present is
not valid nor beneficial when considering
Changes to the Experiment: discuss any
changes you would make to the
experiment to reduce errors, make the
experiment more practical, etc.) and
explain why
how to improve your experimental
methodology
As the researcher, you need to mention
the specific type of error that occurred
during the experiment.
Examples of appropriate sources of error
are listed below but are not limited to:
Measuring errors, (i e chemicals)
– Improperly maintained equipment used
during the experiment
– Improper cleaning contamination
Discuss the uncertainty of your
experimental data by providing
statistical analysis when appropriate,
ie standard deviation can be
referenced
Changes to the Experiment: Identify how
you would alter your experimental
methodology to reduce or minimize errors
and increase the reproducibility of your
empirical data.
What was the purpose of the experiment?
Did you learn anything new when you
executed the experiment?
A goal of this section is to include a
restate the experiment’s hypothesis and
objectives.
Conclusion
In addition, a summary should be
provided on whether or not your
hypothesis was affirmed or denied based
on your empirical data.
/10
How did you investigate the problem and
why investigate in that specific way?
What evidence did you obtain that
strongly supported or refuted your
hypothesis
As the researcher, after completing the
experiment do are you still have any
unanswered questions, ie is further
inquiry and investigation needed, why or
why not?
Finally, briefly outline any major sources
of error that could have given unexpected
results
Research
Connection
This section should summarize an article
(published in an accredited scientific
joumal) that is related to the experiment
that you executed in the laboratory
You should describe the technique(s) used
in the article, the motivations for
performing the experiment(s), the main
findings, and how these factors relate to
the experiment you performed.
/ 10
Pick a concept or a technique related to
the experiment and find a recent peer-
reviewed scientific article.
– Le must have been published within
the last fh (5) years)
Utilize a scientific search engine such as:
– Google Scholar