Finished completely. Practical investigation into Viscosity in liquids (Stokes Law). Viscosity Of Water Lab Report. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) - What conclusions can you draw regarding the viscosity and solubility of a polymer as a function of crosslinking? Carefully drop one marble into each jar. When the ball crosses one of the mark timer is started till it reaches the next, calculation. Castor Oil 22. Large 1 0. Go Premium and unlock all 10 pages Access to all documents Get Unlimited Downloads Improve your grades Upload Share your documents to unlock Free Trial Get 30 days of free Premium Already Premium? Experiment 6: Viscosity (Stoke's Law) Viscosity is a property of uids (liquids and gases) which determines how much resistance is experienced by an object . Drop 2 147 0. What is the relationship between viscosity and velocity? When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met. Nguyen Quoc Trung. The main purpose of a lab report is to demonstrate your understanding of the scientific method by performing and evaluating a hands-on lab experiment. Temperature in Farenheight Time in secsCold 28.20 2246.80Room Temp 72.70 336.51Hot 208.00 1.43. 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ResearchGate has not been able to . Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. a measure of how much a given displacement differs locally from a rigid-body displacement. This means that when the temperature goes up, viscosity goes down, and when the temperature goes up, viscosity goes down. I feel like its a lifeline. Viscosity is one of the properties to describe the " fluidity " of fluid. Because Viscosity changes with temperature and . Cite this page Viscosity Research Paper Pages: 2 (520 words) Because of this, if a solid object is dropped into a fluid of lesser density. However, further sensitivity improvement is required to achieve . Report the average value for the viscosity of the unknown substance, and compare this to published values. (1) By calculations Another way to think about it is that when molecules are cold they are not moving around a lot and it is hard to move. Lastly, the Reynolds number was Extracts from this document. 3. There are several methods that can be applied to measure the viscosity of a liquid, two of which are practiced in this experiment. Viscosity depends on the size and shape of the particles that make the liquid, as well as the attraction between the particles. Having deter- State Whether Your Experiment Succeeded, Science: Lab report Learn HQ Monash University, Writing conclusion paragraphs in a science lab report, The Lab Report University of Toronto Writing Advice, How to Write a Scientific Laboratory Report. . In a lab flow test using Athabasca tar sand and propane as solvent, 50 percent of the bitumen was recovered as upgraded oil. According to equation 2, the weight of a sphere (W, Law of Contract & Problem Solv (LAW-22370), Biochemistry and Molecular Biology (BIOC0001), Business Data Analysis (BSS002-6/Ltn/SEM1), Foundations of Occupational Therapy (160OT), Introduction to English Language (EN1023), 3. Which liquid has the highest viscosity? This is a Premium document. Viscosity is a fluids internal resistance to flow under stress. If you were pushing a box on a shag carpet versus ice, which one will the box slide farther on? Numerical investigations were conducted on the mixing efficiency of resonant acoustic mixing (RAM) technology using a high-viscosity mixture under vertically forced vibrations. The force of the the resistance to an externally applied shear stress. Sheer stress is a cause of drag force that exerted in the boundary layer adjacent to the object surface. Below are 5 core components of a good conclusion for any scientific lab report: At the beginning of your lab report, you should state the goals of your experiment. Make sure that your findings are easy to understand, and avoid using scientific jargon unless it is necessary. enough to determine viscosity with an acceptable degree of accuracy and that perhaps, measuring the same 10. Controlled Variables: Amount of liquid, mass of the object. The flow of a liquid depends on the Reynolds number as depicted in the equation below; The measured viscosity of water matched the theoretical value. You're trying desperately to shake it, but to no avail. By including all of this information, a lab report can provide a comprehensive overview of an experiment and its results. Large 8 1 7258. How does heat affect viscosity? can attribute a part of this systematic error to turbulence and the increased drag thereof, especially so in the 13. I even had time to do some chemistry math while I waited for that to finish! 2. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. 13 | P a g e CONCLUSION: The most accurate density achieved was the density of water using the density bottle. With the use of similar apparatus equipment through constant temperature at atmospheric pressure, the viscosity will be determined by tests in two different fluids in sets of two ball trials; along with data collected from a third set. I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! Gather four clear glass jars and fill one with water, one with corn syrup, one with cooking oil and one with honey. Briefly describe the main findings of your experiment and discuss how they answer your research question or support your hypothesis. She is also certified in secondary special education, biology, and physics in Massachusetts. When a molecule from a slower moving layer moves up in to a faster A fluid can be a gas or a liquid, and it is easy to see that liquids are thicker than gases, and therefore have higher viscosities. Drop one marble at a time and observe what happens to the marble when it enters the liquid. error in our results. If the experiment did not meet its goals, be sure to explain why. the frictional shear forces between them. You do not need to go into detail, but you should make sure that all of the important information is included. Regardless, the results for the fluids viscosity are consistently above the 0. Your report should include the following: Table(s) of raw data; Table(s) of results; A description, with illustrative sketches or photos, of the flow characteristics of each experimental run. 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. If a substance has a high viscosity, there's a lot of resistance, or friction, in the fluid. Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13 . How did you know? Since we're just interested in how viscosity affects velocity of the sphere, let's look at how those two variables are related in the equation. From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . Males with five or more risk factors are three times more likely to report chronic obstructive respiratory disease than males with two or less risk factors. By reducing errors and obstructions it will justify data for better discuss and . Would a brookfield viscometer be useful as an analysis tool when the crosslinking occurs when the polymer no longer flows? The pressure drop across the pipes was recorded to find both the friction factors and Reynolds numbers. The driving force of capillary viscometers is gravitational force, and the flowing time of the liquid is determined due to gravitational force. Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? Lab Report regarding viscosity experiment. Today, we're going to investigate the viscosity of some household fluids to understand the relationship between velocity of an object, a marble, and viscosity. The free All rights reserved. Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. Gender dysphoria: Should gender non-conforming individuals under the age of 16 be allowed to undergo medical treatment? Plot the data for the calibration run and report the value of C. Be sure to include the point (W/,) = (0,0) to verify that the t is reasonable. Low viscosity fluids flow easily (water, alcohol); High viscosity fluids pour slowly (molasses, cold honey, etc.). Enter the email address you signed up with and we'll email you a reset link. Abstract. Start by filling each glass with one of the liquids. Medium Temperature [C] Data measured and through a measured distance of 23 was determined using a video captured at 240 frames per second. We completed the Viscosity Experiment in class on March 18th. Even though doing these methods to reduce the error percentage there will still be some minor errors. The DNA cleavage (in dark) and . Drop 1 43 1. In this experiment, you're going to learn about viscosity. Higher the viscosity of liquid bitumen, the more nearly it approaches a semi-solid state in consistency. 3. The inverse relationship predicts that as the velocity of our ball gets smaller, the viscosity of the liquid must have gotten bigger. Although the order of viscosity is hypothesized wrong, it did test the aim of the experiment which is to determine the viscosity of liquids by calculating time for marble to pass through them. 2003-2023 Chegg Inc. All rights reserved. Why do you think that? A moody diagram was plotted comparing the friction factor versus the Reynolds number. The experiment shows that the slower the time, the higher the viscosity is for a liquid and the faster the time, the lower the viscosity is for a liquid. Thick liquid is said to be more viscous than a thin liquid of the road Small metallic . You can also try other liquids. Drop Frames 240 /s Velocity[m/s] Since velocity is equal to distance divided by time, velocity is inversely proportional to time as well. After that, well record its viscosity by dropping a metal piece and recording the amount of time it took to reach the bottom. The surface stress biosensor was developed as a new type of biosensor to detect protein molecule concentration and has a wide range of clinical applications. The answer is a property of liquids called viscosity. For example, honey is more viscous than water. A strong conclusion should briefly describe the methods used in the experiment. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? acting on the sphere but the sum of all the forces will be zero. On the second graph, plot the K values for the fittings (y-axis . You can download the paper by clicking the button above. moving layer it gets dragged along thereby slowing down the faster moving layer. Is there another way you could measure viscosity or crosslinking? Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. A viscometer consists of a graduated glass cylinder lled with the liquid in question, in our case glycerin. In everyday terms (and for fluids only), viscosity is "thickness". The final step in concluding a lab report is to state whether the experiment was successful or not. Drop 2 44 1. The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the . Two experiments (8 + 8 marks) are asked from each section in the practical exam. - Causes, Symptoms & Treatment, Anchorage Dependence: Definition & Overview, Aldosterone: Definition, Function & Effects, Working Scholars Bringing Tuition-Free College to the Community. The lower the viscosity of a liquid, the thinner the liquid is and the less resistance it experiences. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What is the real-world implications from this experiment? A lab report conveys the aim, methods, results, and conclusions of a scientific experiment. Sphere Average Speed[m/s] Standard deviation Become Premium to read the whole document. oil. Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. You can choose any fluids you want, but we'll suggest some here that work well: ketchup, vegetable oil and water. Whereris the radius of ball bearings. (2019, Nov 27). Before you start, make a prediction. This type of assignment is usually shorter than a research paper. If you're having trouble timing the marble in water, which moves pretty fast, record the trial on your phone in a video. Glycerin 3. Create your account. Small 2 0 7728. The true density of water is 1000 kg/m3 . Students looking for free, top-notch essay and term paper samples on various topics. Finally, the conclusion should offer some suggestions for further research. Clean the glass jar and fill it with the viscous fluid. Fluid viscosity refers to the resistance that the fluid produces when it flows. Liquids that have a LOW viscosity flow quickly (ie. Revised on July 15, 2022. Author content. - 1 Scale (1 decimal) Sorry, preview is currently unavailable. But, when you spill your water, it goes everywhere. tis the inaccuracy of the time measurement Copyright 2023 StudeerSnel B.V., Keizersgracht 424, 1016 GC Amsterdam, KVK: 56829787, BTW: NL852321363B01, L.N.Gumilyov Eurasian National University, Kwame Nkrumah University of Science and Technology, Jomo Kenyatta University of Agriculture and Technology, Bachelor of Business Administration (BBA), Leadership and Management in Nursing (NR06), Avar Kamps,Makine Mhendislii (46000), Power distribution and utilization (EE-312), Chapter 5 - Test bank of Management Information Systems, 14e (Laudon). Fluid mechanics lab experiment 02_aerometer_hydrometer Safeen Yaseen Ja'far . How Does the Consistency of a Liquid Impact Magnetic Attraction, Color Changing Walking Water Science Experiment. Castor oil 17% Create an account to start this course today. This will help to ensure that your conclusion is properly aligned with your objectives. 10.6 Viscosity Test of Bitumen 10.6.1 Introduction Viscosity is reverse of fluidity. are off by 2. Get your timer ready. A graph of the experimental friction factor was compared . It took 5m, 36.51s (336.51 s) to fall to the bottom! The simplest case refers to a lubrication model and is represented by the ow of a non-Newtonian power-law uid between two smooth parallel plates If the friction is high, it's going to slow down the marble and it will take more time for it to reach the bottom, meaning it's moving with a smaller velocity. In your chart, the substances that took the marble the longest to migrate through had the biggest viscosity. Viscosity is a measure of resistance to flow of fluid at a specified temperature. P2 - Practices digital signal processing are practices p1,p2,p3. Discuss the methods used. the fluid that are moving different velocity. The distance at which the sphere was dropped from, could have affected the terminal velocity. Note: Do not remove the densitometer from the cylinder with a particular liquid. Conclusion. This is why it is perfectly acceptable to reject the hypothesis. All other trademarks and copyrights are the property of their respective owners. Introduction Practical investigation into Viscosity in liquids(Stokes Law) Introduction When dealing with fluid/mechanical systems, it is important to know what affects the rate of descent of an object through a liquid. 3 graduated cylindersHoneyMetal piece/marble (has to be something that doesnt float. spam or irrelevant messages, We use cookies to give you the best experience possible. Retrieved from https://paperap.com/paper-on-viscosity-lab-report/. R= R1 + R2 =ohm+.ohm=..ohm The greater the. This was quite impossible in our experiment to be obtained. Enrolling in a course lets you earn progress by passing quizzes and exams. MEASURING VISCOSITY OF DIFFERENT FLUIDS USING BALL DROP METHOD. When heat is applied to fluids, molecules can then slide over each other more easily making the liquid becomes less viscous. Glycerin 21. Record the time in your data table. Obviously the syrup will flow slower than the water in Repeat step 2 for the remaining liquids. copyright 2003-2023 Study.com. Holy moly! The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . You can specify conditions of storing and accessing cookies in your browser, What is the conclusion of the lab report on measurement of viscosity of water, Aim : to determine the equivalent resistance of two resistors connected in series. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? 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. Drop Frames 240 /s Velocity[m/s] 2. Room Temperature (72.7F)First, we fill a graduated cylinder with six inches of honey, which is our liquid that were experimenting with. This suggests that high concentrations of salt can inhibit the process of photosynthesis. the bearing andvis the kinematic viscosity of the fluids. In some cases, it may be necessary to suggest modifications for future experiments. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. The pipe flow investigation compared the fluid flow of smooth and rough pipes of varying diameters. water, rubbing alcohol, and vegetable oil). Lab reports are the most frequent kind of document written in engineering and can count for as much as 25% of a course yet little time or attention is devoted to how to write them well. in table 1. . Filtration time was 1.5 h for the SGO membrane, whereas 48 h were required for the GONS membrane due to higher viscosity. Content may be subject to copyright. The greater the viscosity, the slower an object will move through the liquid. Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. 65 and 1. 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. Drop 1 214 0. Fweight=Fdrag+Fbuoyancy (1), We calculate the drag force acting on the ball by using the Stokes law equation, whereis the viscosity,Ris the radius of the ball bearing andvis the velocity of the ball. Calculate the slope of these graphs, using the equation of . Medium 0 0. Liquid densities: from about 0. )FreezerOvenOven-resistant cupStopwatchMeasuring tape. Compare your results of the measurement of the viscosity with the accepted values. Sphere Weight[g] Diameter[cm] Density[kg/m 3 ] Sir George Stokes was a British scientist that discovered the relationship between viscosity and velocity of a sphere in a liquid in 1851. Lab Report: Water and Ice Does ice have more or less volume than water. and the procedure is described in Section4. This will help to ensure that readers understand how the data was collected and can evaluate its reliability. Medium Final viscosity[Pas] following formula. When the honey is hot, its molecules are moving around a lot and this makes it easier for the honey to move to different places, because the molecules are not just sitting there and not moving. The antibody sequence is a key determinant for high viscosity of highly concentrated solutions; therefore, a sequence- or structure-based tool that can identify highly viscous antibodies from . As the last treatment, the filtered membranes were dried in an oven model G-2100 (F.LLI GALLI G. & P. snc, Pieve Emanuele, MI, Italy) at 40 C for 2 h to complete the self-assembly by evaporating residual water. Wrandom=Srn (8). Comments/ extra information on viscosity experiment: Strain is the geometrical measure of deformation representing the relative displacement between particles in the material body, i.e. calculated and analyzed. the Motor oil. 4. 4 clear glass jars of the same size (we used pint sized mason jars). To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. The viscosity of most fluids obeys simple laws which can be expressed by mathematical equations. Academia.edu no longer supports Internet Explorer. Drop Frames 240 /s Velocity[m/s] Conclusion The objectives of the experiment to demonstrate Poiseuille's law and use the relation to calculate the kinematic viscosity of water were satisfied using the Ubbelohde viscometer. DOCX, PDF, TXT or read online from Scribd, 100% found this document useful (5 votes), 100% found this document useful, Mark this document as useful, 0% found this document not useful, Mark this document as not useful. The result of adding more cross-linking agents to a polyme. Which marbles sinkto the bottom of the jar quickly and which marbles sink to the bottle of the jar slowly. bearing size fall time nine times instead of three different bearing sizes, three different times would have given Place a meter scale vertically beside the jar. The experiment was conducted by releasing each ball bearing size 3 times into the fluids. the same circumstance, this is because syrup has a higher viscosity than water reason for this resistance You'll get a detailed solution from a subject matter expert that helps you learn core concepts. The apple juice had also higher density than the water itself. The conclusion of a lab report summarizes the experiment and its results and states whether the goals of the experiment were met. - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil ResultsHere is a table of the data we collected in this experiment. Below is an example of how to write a conclusion for a lab report on photosynthesis. calculated can be found in the tables bellow. The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. The viscometer constant was also examined and calculated for a hypothetical situation. The experiment records and activities consist of 6 marks, the project has 3 marks and viva on the experiment consist of 5 marks. Worse yet, each professor wants something a little different. Apparatus: Ask for help with any form of tutoring and academic assistance at Tutlance. Method1. 1. , er (0 - 1.5A) Obviously this is not the case Fi; g. I. under ordinary conditions of measurement, but as a result of experiments by Poiseuille, it is generally assumed that a pressure po may be employed what was expected, the Reynolds number suggests that the premise and assumption of laminar flow was a Measure the inner diameter of the jar using a vernier calipers. directly proportional to the velocity gradient within the fluid, for most comm, relationship is described using the equation: [2], The methods in this experiment determine the dynamic viscosity through dropping. Same procedure is carried out for othe, Do not sell or share my personal information. you Cross-Linking Poly (vinyl alcohol) with Sodium Borate Objective:The objective of this experiment is to explore the change in physical properties of a polymer as a result of cross-linking. 3. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. Viscosity is a liquid's resistance to flowing. The discrepancy between the theoretical and the experimental results could be attributed to one of the following reasons: The time recording methods for dropping the . Drop 3 51 1. 10. Conclusion For this experiment, its main objective is to determine the viscosity of a certain fluid. Drop 2 135 0. What was the conclusion of the experiment? applying the appropriate equations the viscosity of the fluid was determined. it is not safe to arrive at conclusions due to the high reactivity of the compounds at the concentrations used in the . Given this we are able to determine the It is also important to discuss any possible sources of error and how they could be corrected in future experiments. through the fluid, exerting a shear force on the fluid surrounding it. 0 NSA/AMA respectively. Drop Frames 240 /s Velocity[m/s] 2401 secandtis the average fall time in frames for each bearing size. meaning that the ball bearing does not create turbulence in its wake. The conclusion should include a discussion of the implications of the data, as well as any errors that were made during the experiment. Medium 7 1 7758. Drop 1 43 1. references values. Drop 3 133 0. buoyancy is given by the following equation, Wherefluidis the density of the fluid,Vis the volume of the sphere andgis the gravitational acceleration. Density was measured three separate ways, each having its own level of accuracy. The higher the relative velocity v of the plates and the smaller the distance y between the plates, the greater the shear stress. Unfortunately, these equations can be solved only in very few cases, but when they can be solved it is found that fluids move in exact agreement with the mathematical predictions. Viscosity of vegetable oil in the range of engine oil, Antimicrobial Activity of Thyme (Thymus vulgaris) Essential Oil Against Listeria monocytogenes Scott A (page 151), The Food Chemistry Laboratory: A Manual for Experimental Foods, Dietetics and Food Scientists, Second Edition, 9076Emulsions Foams and Suspensions - Fundamentals and Applications, MECHANICAL PROPERTIES OF FLUIDS 10.1 INTRODUCTION, Introduction to Fluid Mechanics, Fourth Edition, PUMPS AND MOTORS CONTINUING EDUCATION PROFESSIONAL DEVELOPMENT COURSE, Title: Design of Diesel reactor heated by steam boiler using jatropha cake as a fuel, MEASUREMENT OF VISCOSITY OF LIQUIDS BY THE STOKE'S METHOD, Chemical Engineering Fluid Mechanics (2016), VALVES AND FITTINGS CONTINUING EDUCATION PROFESSIONAL DEVELOPMENT COURSE.
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