The Formal Laboratory Report
Essential Info: The front page of your report must include the following information but it does not need
to be a separate page. THINK GREEN!
Title of the investigation centred on the page
Submitted by: (your name)
Submitted to: (teacher’s name)
Submission Date: (due date)
Course Code: (SNC 1D)
The body of your report should include the following:
Title: Write the title of your experiment at the beginning of your report
Purpose: This is a statement regarding the reason you are doing the experiment. It is usually short
Example: To determine the temperature apple juice boils at.
Hypothesis: Almost all experiments are done with certain expectations in mind about the outcomes.
The hypothesis is an “educated guess” about the results of an experiment.
Example: If we heat apple juice then it will boil at approximately 105C because it
contains water and water boils at 100C.
Materials: This is a detailed list of all equipment and materials used in the experiment. Be specific
about sizes and quantities.
Example: 600mL beaker, 10mL graduated cylinder, eyedropper
Safety: Include any safety measures that should be taken into consideration during the
Diagrams: A diagram of the apparatus or arrangement of materials assists the reader to visualize the
method used. They should be done using only a pencil and ruler, on blank paper. All labels
should be neatly printed using lower case letters. Diagrams can be referred to in Methods
Experimental Design: List the independent, dependent and controlled variables in your
experiments and summarize the procedure.
Procedure: This is MOST IMPORTANT part of an investigation. This section outlines all the detailed
steps taken in performing the experiment. It should be written using numbered steps,
past tense and no pronouns (like “I”, “we”, “you” etc.).
Example: 1. 50mL of apple juice was added to a 250mL beaker.
2. The beaker was placed on a hot plate. The hot plate was turned to
3. The temperature was measured using a thermometer every 2
minutes until the apple juice boiled.
4. Steps 1-3 were repeated two more times.
Observations: This section records all the observations noted (quantitative and qualitative). Tables and
graphs may be included in this section and should have a title and number. Be careful not
to make conclusions in this section.
Trial Number Temperature of Boiling (C)
Calculations: All calculations should be shown in this section.
Calculations to determine the average:
Example: 103 304 ÷ 3 = 101.3C
Conclusion: This final paragraph at the end of your lab should summarize the investigation as you
would if you were writing a book report. As well, it should state whether or not your
purpose was fulfilled and should indicate whether your hypothesis was correct, partially
correct, or incorrect. You should be able to explain how you arrived at your conclusion(s),
justify your method and describe your results. You should also suggest a theory to support
or interpret your results.
Experimental Error: All experiments are subject to errors that should be accounted for and discussed
here. Also include how each error affected the results.
1. The temperature of the hot plates varied from one group to the next. This would mean
that there would be variation of time between groups.
2. The groups had different definitions of boiling. If one group defines boiling as the point
where the first bubble breaks through the surface, then their time may be shorter than
a second group who defines boiling as the point when many bubbles break through the
Improvements: If you were going to do this experiment again, what changes would you make to
improve the experiment.
Questions: If you were assigned questions with the investigation, they would be answered here.
NOTE: MAKE SURE YOU CHECK WITH YOUR TEACHER TO DETERMINE IF ANY OF THE SECTIONS
SHOULD BE EXCLUDED FROM YOUR LAB REPORT.