How to write a conclusion for a lab report + examples
When you are writing a lab report , the conclusion is one of the most important sections. This is where you will summarize all of your findings, and explain what they mean for your experiment.
The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. The first step is to restate the goals of the experiment. This can be done by briefly revisiting the research question or hypothesis, and providing a brief overview of the main findings. Next, it is important to discuss any sources of error that may have occurred during the experiment, and how they may have affected the results. Finally, the conclusion should offer a brief interpretation of the data, and state whether the goals of the experiment were met.
- Read: How to write a scientific conclusion .
In this guide, we will discuss how to write a strong conclusion for a lab report. We will include tips on formatting and structure, as well as how to effectively communicate your findings. Let’s get started!
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- How to write a lab report for chemistry + Examples
How to Write a Conclusion for a Lab Report
Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. Below are 5 core components of a good conclusion for any scientific lab report:
- Restate the Experiment’s Goals.
- Discuss the methods used.
- Include and Analyze Final Data.
- Summarize the findings.
- State Whether Your Experiment Succeeded.
1. Restate the Experiment’s Goals.
At the beginning of your lab report, you should state the goals of your experiment. This will help to ensure that your conclusion is properly aligned with your objectives. When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met.
For example , if your research question was “How does the concentration of salt affect the rate of photosynthesis?”, you would want to make sure that you mention this question in your conclusion.
2. Discuss the methods used.
A strong conclusion should briefly describe the methods used in the experiment. This will help to ensure that readers understand how the data was collected and can evaluate its reliability.
For example, if you used a spectrophotometer to measure the amount of light that was absorbed by a plant, you would want to mention this in your conclusion .
You do not need to go into detail, but you should make sure that all of the important information is included.
3. Include and Analyze Final Data
A lab report should include a conclusion that analyzes the final data. The conclusion should include a discussion of the implications of the data, as well as any errors that were made during the experiment. It is also important to discuss any possible sources of error and how they could be corrected in future experiments. Finally, the conclusion should offer some suggestions for further research. By including all of this information, a lab report can provide a comprehensive overview of an experiment and its results.
4. Summarize the findings.
Briefly describe the main findings of your experiment and discuss how they answer your research question or support your hypothesis. Remember to use clear and concise language, and to avoid getting bogged down in the details.
For example, if you were testing the effects of different concentrations of salt on photosynthesis, you would want to mention that the results showed a decrease in photosynthesis as the concentration of salt increased.
Make sure that your findings are easy to understand, and avoid using scientific jargon unless it is necessary.
5. State Whether Your Experiment Succeeded
The final step in concluding a lab report is to state whether the experiment was successful or not. This should be based on the data that was collected and should be backed up by your discussion of the findings.
If the experiment did not meet its goals, be sure to explain why. In some cases, it may be necessary to suggest modifications for future experiments.
Lab report conclusion examples
Below is an example of how to write a conclusion for a lab report on photosynthesis.
Topic : The effect of salt concentration on the rate of photosynthesis.
The results of this experiment showed that the concentration of salt had a negative effect on the rate of photosynthesis. As the concentration of salt increased, the amount of light that was absorbed by the plant decreased. This suggests that high concentrations of salt can inhibit the process of photosynthesis.
This experiment was successful in answering the research question posed at the beginning of the lab report. The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. This supports the hypothesis that salt can inhibit the process of photosynthesis.
The experiment was not without its flaws, however. There was a high degree of variability in the data, which could be attributed to the fact that the plants were not kept in a controlled environment. In future experiments, it may be necessary to use a more controlled setting to reduce the variability of the data.
Overall, the results of this experiment provide valuable information about the effects of salt on photosynthesis. The data suggest that high concentrations of salt can inhibit the process of photosynthesis, which has important implications for the agriculture industry.
Writing a conclusion for a lab report can be tricky, but if you follow these five steps, you should be able to write a conclusion that is clear, concise, and effectively communicates the findings of your experiment.
- Science: Lab report – Learn HQ – Monash University
- Sample Lab Report #2
- Writing conclusion paragraphs in a science lab report
- The Lab Report – University of Toronto Writing Advice
- How to Write a Scientific Laboratory Report
Now you know how to write a conclusion for a chemistry lab report , biology lab report , or any other kind of scientific experiment paper.
How to write preface for project report
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- Guide to Experimental Design | Overview, Steps, & Examples
Guide to Experimental Design | Overview, 5 steps & Examples
Published on December 3, 2019 by Rebecca Bevans . Revised on December 5, 2022.
Experiments are used to study causal relationships . You manipulate one or more independent variables and measure their effect on one or more dependent variables.
Experimental design create a set of procedures to systematically test a hypothesis . A good experimental design requires a strong understanding of the system you are studying.
There are five key steps in designing an experiment:
- Consider your variables and how they are related
- Write a specific, testable hypothesis
- Design experimental treatments to manipulate your independent variable
- Assign subjects to groups, either between-subjects or within-subjects
- Plan how you will measure your dependent variable
For valid conclusions, you also need to select a representative sample and control any extraneous variables that might influence your results. If random assignment of participants to control and treatment groups is impossible, unethical, or highly difficult, consider an observational study instead. This minimizes several types of research bias, particularly sampling bias , survivorship bias , and attrition bias as time passes.
Table of contents
Step 1: define your variables, step 2: write your hypothesis, step 3: design your experimental treatments, step 4: assign your subjects to treatment groups, step 5: measure your dependent variable, frequently asked questions about experiments.
You should begin with a specific research question . We will work with two research question examples, one from health sciences and one from ecology:
To translate your research question into an experimental hypothesis, you need to define the main variables and make predictions about how they are related.
Start by simply listing the independent and dependent variables .
Then you need to think about possible extraneous and confounding variables and consider how you might control them in your experiment.
Finally, you can put these variables together into a diagram. Use arrows to show the possible relationships between variables and include signs to show the expected direction of the relationships.
Here we predict that increasing temperature will increase soil respiration and decrease soil moisture, while decreasing soil moisture will lead to decreased soil respiration.
Now that you have a strong conceptual understanding of the system you are studying, you should be able to write a specific, testable hypothesis that addresses your research question.
The next steps will describe how to design a controlled experiment . In a controlled experiment, you must be able to:
- Systematically and precisely manipulate the independent variable(s).
- Precisely measure the dependent variable(s).
- Control any potential confounding variables.
If your study system doesn’t match these criteria, there are other types of research you can use to answer your research question.
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How you manipulate the independent variable can affect the experiment’s external validity – that is, the extent to which the results can be generalized and applied to the broader world.
First, you may need to decide how widely to vary your independent variable.
- just slightly above the natural range for your study region.
- over a wider range of temperatures to mimic future warming.
- over an extreme range that is beyond any possible natural variation.
Second, you may need to choose how finely to vary your independent variable. Sometimes this choice is made for you by your experimental system, but often you will need to decide, and this will affect how much you can infer from your results.
- a categorical variable : either as binary (yes/no) or as levels of a factor (no phone use, low phone use, high phone use).
- a continuous variable (minutes of phone use measured every night).
How you apply your experimental treatments to your test subjects is crucial for obtaining valid and reliable results.
First, you need to consider the study size : how many individuals will be included in the experiment? In general, the more subjects you include, the greater your experiment’s statistical power , which determines how much confidence you can have in your results.
Then you need to randomly assign your subjects to treatment groups . Each group receives a different level of the treatment (e.g. no phone use, low phone use, high phone use).
You should also include a control group , which receives no treatment. The control group tells us what would have happened to your test subjects without any experimental intervention.
When assigning your subjects to groups, there are two main choices you need to make:
- A completely randomized design vs a randomized block design .
- A between-subjects design vs a within-subjects design .
An experiment can be completely randomized or randomized within blocks (aka strata):
- In a completely randomized design , every subject is assigned to a treatment group at random.
- In a randomized block design (aka stratified random design), subjects are first grouped according to a characteristic they share, and then randomly assigned to treatments within those groups.
Sometimes randomization isn’t practical or ethical , so researchers create partially-random or even non-random designs. An experimental design where treatments aren’t randomly assigned is called a quasi-experimental design .
Between-subjects vs. within-subjects
In a between-subjects design (also known as an independent measures design or classic ANOVA design), individuals receive only one of the possible levels of an experimental treatment.
In medical or social research, you might also use matched pairs within your between-subjects design to make sure that each treatment group contains the same variety of test subjects in the same proportions.
In a within-subjects design (also known as a repeated measures design), every individual receives each of the experimental treatments consecutively, and their responses to each treatment are measured.
Within-subjects or repeated measures can also refer to an experimental design where an effect emerges over time, and individual responses are measured over time in order to measure this effect as it emerges.
Counterbalancing (randomizing or reversing the order of treatments among subjects) is often used in within-subjects designs to ensure that the order of treatment application doesn’t influence the results of the experiment.
Finally, you need to decide how you’ll collect data on your dependent variable outcomes. You should aim for reliable and valid measurements that minimize research bias or error.
Some variables, like temperature, can be objectively measured with scientific instruments. Others may need to be operationalized to turn them into measurable observations.
- Ask participants to record what time they go to sleep and get up each day.
- Ask participants to wear a sleep tracker.
How precisely you measure your dependent variable also affects the kinds of statistical analysis you can use on your data.
Experiments are always context-dependent, and a good experimental design will take into account all of the unique considerations of your study system to produce information that is both valid and relevant to your research question.
Experimental design means planning a set of procedures to investigate a relationship between variables . To design a controlled experiment, you need:
- A testable hypothesis
- At least one independent variable that can be precisely manipulated
- At least one dependent variable that can be precisely measured
When designing the experiment, you decide:
- How you will manipulate the variable(s)
- How you will control for any potential confounding variables
- How many subjects or samples will be included in the study
- How subjects will be assigned to treatment levels
Experimental design is essential to the internal and external validity of your experiment.
The key difference between observational studies and experimental designs is that a well-done observational study does not influence the responses of participants, while experiments do have some sort of treatment condition applied to at least some participants by random assignment .
A confounding variable , also called a confounder or confounding factor, is a third variable in a study examining a potential cause-and-effect relationship.
A confounding variable is related to both the supposed cause and the supposed effect of the study. It can be difficult to separate the true effect of the independent variable from the effect of the confounding variable.
In your research design , it’s important to identify potential confounding variables and plan how you will reduce their impact.
In a between-subjects design , every participant experiences only one condition, and researchers assess group differences between participants in various conditions.
In a within-subjects design , each participant experiences all conditions, and researchers test the same participants repeatedly for differences between conditions.
The word “between” means that you’re comparing different conditions between groups, while the word “within” means you’re comparing different conditions within the same group.
An experimental group, also known as a treatment group, receives the treatment whose effect researchers wish to study, whereas a control group does not. They should be identical in all other ways.
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How to Write up a Science Experiment
Last Updated: January 24, 2023
This article was co-authored by Michael Simpson, PhD . Dr. Michael Simpson (Mike) is a Registered Professional Biologist in British Columbia, Canada. He has over 20 years of experience in ecology research and professional practice in Britain and North America, with an emphasis on plants and biological diversity. Mike also specializes in science communication and providing education and technical support for ecology projects. Mike received a BSc with honors in Ecology and an MA in Society, Science, and Nature from The University of Lancaster in England as well as a Ph.D. from the University of Alberta. He has worked in British, North American, and South American ecosystems, and with First Nations communities, non-profits, government, academia, and industry. This article has been viewed 221,203 times.
Any time you have conducted a science experiment, you should write a lab report detailing why the experiment was performed, the results you expected, the process you used, the actual results, and a discussion of what the results mean. Lab reports often follow a very standard format starting with an abstract and introduction, followed by a materials and methods section, the results and discussion, and finally a conclusion. This format will allow the reader to find answers to common questions that are often asked: Why was the experiment performed? What were the expected results? How was the experiment conducted? What happened in the experiment? What do the results mean?. This article explains the basic format of a lab report.
Writing an Abstract and Introduction
- The purpose of this short summary is to provide the reader with enough information on the experiment that they can see if they want or need to read the entire report. The abstract helps them determine if your research is relevant to them.
- Devote a sentence to describing the purpose of the project and its significance. Then, very briefly describe the materials and methods used. Follow up with a 1-2 sentence description of the results of the experiment. You might also provide a list of keywords listing subjects related to your research.
- The introduction will outline what the experiment is, why it was done, and why it is important. It must provide the reader with two key pieces of information: what is the question the experiment is supposed to answer and why is answering this question important.
- A research hypothesis should be a brief statement that pares down your problem that you described in your introduction into something that is testable and falsifiable.
- Scientists must create a hypothesis from which an experiment can reasonably be designed and carried out.
- A hypothesis is never proved in an experiment, only "verified" or "supported".
- For example, you might start with "Fertilizer affects how tall a plant will grow". You could expand this idea to a clear hypothesis: "Plants grow faster and taller when they are given fertilizer". To make it a testable hypothesis, you could add experimental details: "Plants which are given a solution with 1ml of fertilizer grow faster than plants without fertilizer because they are given more nutrients."
Explaining Your Research Procedure
- This section is extremely crucial documentation of your methods of analysis.
- For example, if you were testing how fertilizer affects plant growth, you would want to state what brand of fertilizer you used, what species of plant you used and brand of seed.
- Make sure you include the quantity of all objects used in the experiment.
- Remember all experiments involve controls and variables. Describe these here.
- If you used a published laboratory method, be sure to provide a reference for the original method.
- For example, if you are testing the effect of fertilizer on plant growth you would want a graph showing the average growth of plants given fertilizer vs. those without.
- You would also want to describe the result. For example "Plants which were given a concentration of 1ml of fertilizer grew an average of 4 cm taller than those that were not given fertilizer."
- As you go along, narrate your results. Tell the reader why a result is significant to the experiment or problem. This will allow the reader to follow your thinking process.
- Compare your results to your original hypothesis. State whether or not your hypothesis was supported or not by your experiment.
- Quantitative data is anything that expressed in terms of numerical forms such as percentages or statistics. Qualitative data is derived from broad questions and is expressed in the form of word responses from study participants.
- In this section, the author can address other questions such as: "why did we get an unexpected result?" or "what would happen if one aspect of the procedure was altered?".
- If your results did not verify your hypothesis, explain your reasoning why.
- Be sure to link back to the introduction and whether or not the experiment addressed the goals of your analysis.
- You can use software such as EndNote to help you cite and build a properly referenced bibliography.
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- ↑ Michael Simpson, PhD. Registered Professional Biologist. Expert Interview. 8 September 2021.
- ↑ https://www.matrix.edu.au/how-to-write-a-scientific-report/
- ↑ https://explorable.com/research-hypothesis
- ↑ https://www.monash.edu/learnhq/write-like-a-pro/annotated-assessment-samples/science/science-lab-report
About This Article
When you’re writing up a science experiment for a class, break it into sections for your introduction, procedure, findings, and conclusion. In the intro, explain the purpose of your experiment and what you predicted would happen, then give a brief overview of what you did. In the procedure section, describe all of the materials you used and give a step-by-step account of your method. In the findings section, give the results from your experiment, including any graphs or diagrams you made. Then, explain if your expectations were met and what further research you can do. Finish with a brief conclusion that summarizes your experiment and its results. For more tips from our Science co-author, including how to write an abstract for your science paper, read on! Did this summary help you? Yes No
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How to write a lab report conclusion.
Like other reports, without a conclusion, a lab report is incomplete. Conclusions are an integral part of lab reports and are fundamental to the demonstration of report objectives and reiteration of findings.
Although conclusions are often short, confined to a paragraph, they are nonetheless some of the most difficult aspects of a lab report.
This article will, therefore, explain how to write a good conclusion for a lab report. But before that, it will remind you of the basics and format of lab reports for a comprehensive exposition.
Basic Lab Report
All reports describe the process of an experiment or a study from the beginning to the end. There are several categories of reports and a lab report is one of them.
A lab report follows the same routine as a typical report. Except that in a lab report, you are mostly dealing with scientific and laboratory experiments. In other words, a lab report describes the process of a scientific and laboratory experiment from the beginning to the end.
A lab report is required to test what students — whether chemistry students or biology students — had learned in the course of an experiment.
Ideally, a lab report begins with an introduction and ends with a conclusion. Conclusion is often the part where the results of experiments are reiterated and readers are provided with a short but general overview of the whole process.
Science Lab Report Format
Unlike other reports, a lab report is fundamentally a science experiment report. A scientific report documents the process, procedures, and findings of scientific research.
An example of a scientific report is an academic essay a teacher asked you to submit about technology or the one you wrote about cancer.
Whether your lab report is biological or chemical, there is a format to all scientific reports. A typical scientific laboratory report will contain:
- Purpose: A brief description of what the research is all about, including the methods used and the resources available to the student.
- Hypothesis: Guess statements on expected results of the scientific experiment.
- Procedure: A step-by-step guide and instructions followed by the student in the course of the experiment.
- Lab Safety: Safety precautions adhered to by the student throughout the experiment.
- Data: Recorded experimental data generated on the experiment by the student.
- Observations: The sudden burst of insight and perspectives about the experiment.
- Results: The findings of the student from the experiment through collected data and observations.
- Conclusion: Summary of the experiment, most especially as the findings relate to the report’s purpose and hypothesis.
Lab Report Conclusion
As a university or college science student, writing a lab report might not be new to you but it is a challenging process. This is because the whole lab report structure consumes. From the objective of the experiment to lab report conclusions, each structure wrestles for time.
Learning how to write a discussion and conclusion for a lab report is not the same as learning how to write a lab report itself. While it could be said that knowing the latter should help with the former, it is not always so. There are several examples of great lab reports with shabby conclusions.
Conclusions can prove tricky and this is the reason why you need to learn how to write them. To conclude lab reports, you would need to be familiar with the lab report conclusion outline (also called the lab report conclusion template). You can consider the following 5 outlines:
The first step to take before you conclude your reports is to assess the whole report from the beginning to where it stopped. This means you would need to visit and revisit the whole experiment to be sure that no structure of your report is left out.
The purpose of this is for you to go through the process of the report again. Experiments are usually consuming and at some points, you might get lost or stuck in a part and thereby lose that sense of touch with other parts. But if you can assess the whole experiment again, it would be easy to jot down the process in the report for a succinct conclusion.
After you might have assessed the whole report, you would need to pay more attention to the introduction of your report under this step. You should be looking at the proposed purpose of your report here and see if it tallies with what you intend to conclude with.
The introductory part of your report must align with the conclusive part. The introduction part should not be saying something different from the conclusion unless your report risks a crime of inconsistency. Consistency is essential to every great scientific and laboratory report.
Now that you have assessed the general report and the introductory, the next stage is to apply the RERUN Method to conclude your report. The RERUN is a useful acronym for integrating the essential parts of your experiment in your conclusion. Just as the rest of the report, conclusions also contain key ingredients.
RERUN stands for Restate, Explain, Results, Uncertainties , and New . To brilliantly conclude your report, you would need to follow the acronym and apply what each letter stands for.
When you want to conclude, you should Restate the lab experiment and Explain what the whole project is set out to achieve. Then proceed to explain the Results through the generated data and confirmation of the hypothesis. After that, make provisions for the Uncertainty and discuss New matters or solutions arising from the experiment.
- Add Sections If necessary, you should add other sections of your experiment. Depending on the purpose of your project, you might need to add your data procedures or part of your observations to it. While the RERUN Method is a great way to conclude, it is not absolute. For instance, you may ask yourself “What is the importance of calculations in a lab report or my lab report?” and try to include the section where necessary.
- Conclusive Assessment Once you are done with the conclusion, you should assess that part again. You should look out for errors, consistency, and how the whole part of your report reads with and without that portion of the added conclusion. How long should a lab report conclusion be? It should be as concise and precise as possible.
Examples of Lab Report Conclusion
Provided are examples of a good scientific report conclusion and a bad one. The good one follows the outlines of concluding a report while the bad one negates the outlines. Through the examples, you can glean how best to conclude your report.
A good report conclusion will contain all 5 outlines (mentioned above) that can be deployed for summing up your reports. Here is an example:
“In conclusion, team management is a process and only indicates the many strategies that go into it, helped by effective decision-making sequential and procedural. Since most decisions begin from problems, it is pertinent that the processes of decision-making reflect the identification of problems, definition of them, decision, action, and feedback. Through the sequences, it would be noted that decision-making can be programmed or non-programmed, depending on the flexibility and occurrence; and can be operational, tactical, or strategic, depending on the duration of the problem needed to be solved. Besides, there are styles of decision-making, informed by actions. These actions, however, should always be checked and balanced through effective feedback.”
Before the report conclusion was written, a general assessment of the whole report was made to jot down the process and relearned the experience. The first report hinges on team management and decision-making, both themes were justified.
Also, through an introductory assessment, the topic sentence and purpose of the report were clear. The conclusion was well-organized and the report was not bereft of the conclusion outlines not excluding the RERUN Method.
This is one of the examples of a bad report conclusion.
“The infant stage is considered fundamental. It is the stage where all other stages are premised. It is thus plausible that development theories be looked at from this stage. The stage shows how Piaget’s and Vygotsky’s theories work, which in turn provide perspectives to understanding breastfeeding and mental health in infants.”
From the conclusion, it can be gleaned that the report does not follow the outlines as well as the RERUN Method. The thesis statement was unclear and the conclusion itself seems hurriedly done.
Need Help With Writing a Lab Report Conclusion?
Learning how to write a conclusion for a biology lab report or a chemistry lab report or just any other lab report can be challenging. You could bypass the challenges, anyway, by hiring cheap and trusted homework help or an expert. You would need to be certain they could be trusted with your deadline and are quality enough to earn you top grades in class. Otherwise, you should learn the nitty-gritty of lab reports yourself.
It shouldn’t be difficult to learn how to end a conclusion in a lab report, considering that this article has taken you through the process of lab report itself and then the outlines of lab report conclusions. Also provided are lab report conclusion examples — both good and bad — that you can model yours after.
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How to Write the Perfect Chemistry Lab Report: A Definitive Guide
February 11, 2020 By Guest Posts Leave a Comment
Students have to deal with multiple academic tasks, and writing lab reports (lots of them!) is one of them. Its main purpose is to explain what you did in your experiment, what you learned and what the results meant.
Performing experiments and reporting them properly is a cornerstone of on your way into learning chemistry .
But how do you write a chemistry lab report properly?
It’s now time to find out!
Our ultimate guide sheds light on the main parts of lab report writing. You ought to be aware of every section and understand how to complete them properly. Therefore, we have divided our guide into three major sections that are:
- Parts of the lab report;
- A step-by-step review;
- Writing your project.
It’s necessary to begin with an overview of the main sections that should be present on a laboratory report for chemistry.
Mind that sometimes these sections are called differently but have the same purpose. Some of the sections may be missing, but the general structure should be close to this. Everything depends on the educational institution.
It is important to know that usually lab reports are written after the lab session is finished . This means that you need to have everything previously recorded in your lab notebook . You are supposed to keep track of everything you do in the lab in your laboratory notebook, and then using that notebook to write down your lab report, not the other way around.
Reviewing Every Step
Now, we’d like to go through the main stages of a chemistry lab report. It’s necessary to add brief comments concerning each of them. Your laboratory report begins with a title page. You already know what it consists of. Let’s check how to compose it correctly. The information must be presented on the upper right-hand side of the page. All the points (the title, your name, collaborators, etc.) should be mentioned on the separate line.
Afterward comes the second part, which includes:
- The course title
- Title of the experiment
- Title of the parts within the experiment
- Semester, year, etc. (optional)
This data appears in the middle of the title page.
The next section is the Introduction and it begins with this word in the left upper corner of your report. It should consist of no more than a couple of paragraphs and end with at least one hypothesis.
The body of your project consists of the procedure, materials and methods employed; data; results and observations. The section Procedure commonly consists of several steps that were followed for the proper conduction of the experiment(s). They could be divided in different parts, and those would describe your actions.
The section Data contains the numerical facts and Observations that provide the changes that took place. Afterwards, you move to the Discussions, in which you ought to plainly explain all the numbers, observations and collected data. Your conclusions provide an overall summary of the entire lab report, and the whole experimental session itself.
Writing a Chemistry Lab Report
The last lap in our “race” is to write a laboratory report . We have already mentioned the main constituents of the title page. Therefore, we can hit the text of your project. Your abstract appears soon after the title page. An abstract is a quick summary that sums up the whole thing (hypothesis to be proven, and conclusions that are reached). Nonetheless, you should leave some space and skip it until the entire project is finished. It is recommended to write the abstract last. The main point is that this section provides a brief review of what your lab report is about and what you’ve managed to achieve.
The introductory part tells your readers what to expect from the project. Write a couple o paragraphs and explain the purpose of your experiment. Including references here is also highly encouraged. The last sentence of your introduction is called a hypothesis or a thesis statement. It shows what you hope to achieve at the end of your research.
The main body consists of several parts and of course, each has its purpose. You should introduce the materials and methods you need to conduct the research. Explain your choice and how your choice helps to conduct a safe and accurate study.
Take instant records of everything that happens during the experiment in your lab notebook . Never rely on your memory!
Afterwards, you’ll interpret the data and explain it using plain words. Don’t draw any conclusions when you record data and don’t explain it in the section called Results. This function should be fulfilled in the sections Discussions or Analysis sections, which should come right afterwards.
Your conclusion makes a brief summary. It should consist of 3-4 sentences, not many more. Restate your hypothesis in other words. Mention whether you’ve achieved your initial goal and explain its value.
Importantly, do realize that if a hypothesis cannot be proven, or an experiment doesn’t give you the results you expected, it doesn’t mean that your experiment and lab session was a failure. It is extremely common in chemistry to find yourself on this kind of situations! You only need to be able to explain why you got the results that you got, and how would you go around to fix them!
Further Sections on Your Report
Don’t forget about the contributors (labmates, supervisiors…) to your research.
You should also obligatorily use some secondary sources to support your theory. Therefore, you have to cite and make references according to the assigned writing format. You can reference other articles all over your manuscript (especially in the introduction and discussion sections), but don’t forget to put them together (or at the bottom of each page), and cite them properly.
The final step is to proofread your lab report. You’re free to use reading aloud and in your head, reading everything again, and using special grammar and spelling checking applications.
To sum up, keep in mind all these guidelines when you’re assigned to write a lab report. Thus, you’ll never miss something important, which can cost you essential grades. Write each section properly to receive the highest grades for your experiment. Always be clear, cite the appropriate references, and be objective with your analysis and conclusions!
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According to my experiments, the Energizer maintained its voltage (dependent variable) for approximately a 3% longer period of time (independent variable) than Duracell in a low current drain device. For a medium drain device, the Energizer maintained its voltage for approximately 10% longer than Duracell. For a high drain device, the Energizer maintained its voltage for approximately 29% longer than Duracell. Basically, the Energizer performs with increasing superiority, the higher the current drain of the device.
The heavy-duty non-alkaline batteries do not maintain their voltage as long as either alkaline battery at any level of current drain.
My hypothesis was that Energizer would last the longest in all of the devices tested. My results do support my hypothesis.
I think the tests I did went smoothly and I had no problems, except for the fact that the batteries recover some of their voltage if they are not running in something. Therefore, I had to take the measurements quickly.
An interesting future study might involve testing the batteries at different temperatures to simulate actual usage in very cold or very hot conditions.
Wrapping Up Your Conclusion 1. Describe possible errors that may have occurred. To provide an accurate depiction of the lab experiment, describe... 2. Talk about uncertainties. There may be uncontrollable circumstances that impact your experiment, such as weather... 3. Propose future experiments. In ...
How to Write a Conclusion for a Lab Report 1. Restate the Experiment’s Goals.. At the beginning of your lab report, you should state the goals of your experiment. 2. Discuss the methods used.. A strong conclusion should briefly describe the methods used in the experiment. This will... 3. Include and ...
Your conclusions summarize how your results support or contradict your original hypothesis: Summarize your science fair project results in a few sentences and use this summary to support your conclusion. Include key facts from your background research to help explain your results as needed.
One way to write your introduction is with a funnel (an inverted triangle) structure: Start with the broad, general research topic. Narrow your topic down your specific study focus. End with a clear research question.
There are five key steps in designing an experiment: Consider your variables and how they are related; Write a specific, testable hypothesis; Design experimental treatments to manipulate your independent variable; Assign subjects to groups, either between-subjects or within-subjects; Plan how you will measure your dependent variable
Write a conclusion.  This summarizes the experiment and what your results told you about the problem the experiment addressed. Summarize the problem the experiment addressed and the researched questions which framed the analysis. Next, explain what the experiment shows your problem.
When you want to conclude, you should Restate the lab experiment and Explain what the whole project is set out to achieve. Then proceed to explain the Results through the generated data and confirmation of the hypothesis. After that, make provisions for the Uncertainty and discuss New matters or solutions arising from the experiment.
Let’s check how to compose it correctly. The information must be presented on the upper right-hand side of the page. All the points (the title, your name, collaborators, etc.) should be mentioned on the separate line. Afterward comes the second part, which includes: The course title. Title of the experiment.
Sample Conclusions Made possible with support from: Results According to my experiments, the Energizer maintained its voltage (dependent variable) for approximately a 3% longer period of time (independent variable) than Duracell in a low current drain device.