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. Time how long it takes for the marble to sink. What was the conclusion of the experiment? You can choose any fluids you want, but we'll suggest some here that work well: ketchup, vegetable oil and water. Retrieved from https://paperap.com/paper-on-viscosity-lab-report/. Enrolling in a course lets you earn progress by passing quizzes and exams. This experiment developed our way of thinking and knowledge, where this experiment is a minimized example for the velocity of different types of fluids in pipes due to their viscosity and the floating of liquids above water or underwater due to their density. The answer is a property of liquids called viscosity. Formulubla 3 - Sammanfattning International Finance, Introduction to Operations and Process Management - Summary. Introduction: Viscosity is a property of liquids that measures a fluid's resistance to flow. Castor Oil 22. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. Viscosity Of Water Lab Report. the fluid that are moving different velocity. However, further sensitivity improvement is required to achieve . =mV (5), Wheremis the mass andVis the volume of the ball bearings. meaning that the ball bearing does not create turbulence in its wake. The time taken to travel between two marks on the beaker was recorded. Experts are tested by Chegg as specialists in their subject area. Sphere Average Speed[m/s] Standard deviation Discuss your results, focusing on the following: (1) Two resistors of unknown resistances Sphere Weight[g] Diameter[cm] Density[kg/m 3 ] How did you know. Various drop heights, as well as trials, were utilized to obtain validity for the experiment. Using the measurements and The temperature of the fluids was measured with a thermometer, see table 2. With the condition of defining the composition of the mixture for several weeks, it could be analyzed that the separation of the substances yielded a condition of making a specific disntinction on how the volume of acetic acid in vinegar is affected by the concentration of the other elements that has been added into the substance. ResearchGate has not been able to . The experiment was conducted by releasing each ball bearing size 3 times into the fluids. Our body senses molecules jumping around a lot as heat. Ch09 - Chapter 09 solution for Intermediate Accounting by Donald E. Kieso, Jerry J. Wrandom=Srn (8). 794 %. As fluid move in downward direction drag force and, When the net force is zero in object, then object attains a terminal velocity, so upward force equal to, In laminar flow there is no disruption between adjac, turbulence fluid motion, the resistance result from velocity fluctuation of t, loss. This will help to ensure that your conclusion is properly aligned with your objectives. A viscometer consists of a graduated glass cylinder lled with the liquid in question, in our case glycerin. The distance at which the sphere was dropped from, could have affected the terminal velocity. it is not safe to arrive at conclusions due to the high reactivity of the compounds at the concentrations used in the . How much did you enjoy doing the experiment? A lab report should include a conclusion that analyzes the final data. Hint: What is the experiment title? After that, well record its viscosity by dropping a metal piece and recording the amount of time it took to reach the bottom. you Cooking Oil (enough to fill one jar) We used Vegetable Oil, but any Cooking Oil will work. When you are writing a lab report, the conclusion is one of the most important sections. We will include tips on formatting and structure, as well as how to effectively communicate your findings. From the pressure diagrams, it was concluded that there was a high-pressure gradient at the leading edge and decreased through the aerofoil. It is a measure of the resistance to flow. Describe the relationship between viscosity and crosslinking? - 1 Scale (1 decimal) This is where you will summarize all of your findings, and explain what they mean for your experiment. - 1 Thermometer By reducing errors and obstructions it will justify data for better discuss and . In a lab flow test using Athabasca tar sand and propane as solvent, 50 percent of the bitumen was recovered as upgraded oil. 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. Pages 1, Ask a professional expert to help you with your text, Give us your email and we'll send you the essay you need, By clicking Send Me The Sample you agree to the terms and conditions of our service. 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 Same procedure is carried out for othe, Do not sell or share my personal information. Measure the inner diameter of the jar using a vernier calipers. Use the template provided to prepare your lab report for this experiment. Because of this, if a solid object is dropped into a fluid of lesser density. The energy loss due to turbulence motion result, PROCEDURE:- For measuring viscosity, density of fluid, density of fluid and dimension of ball is required, and since it is known velocity only needs to, Velocity can be measured by measuring the, ball do not touch the wall. in table 1. Carefully drop one marble into each jar. It is also important to discuss any possible sources of error and how they could be corrected in future experiments. Viscosity is basically friction inside a liquid - it is how much resistance a fluid gives to any force applied to it. Bacteria Lab Report. acting on the sphere but the sum of all the forces will be zero. Drop 1 43 1. Drop one marble at a time and observe what happens to the marble when it enters the liquid. Theory We consider the schematic in Figure1. Hint: What is the experiment title? Solid densities: from about 0. LAB REPORT HYDRAULIC POLITEKNIK : SEMESTER 4 : PROPERTIES OF FLUID. water, rubbing alcohol, and vegetable oil). Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. Method1. 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. Its like a teacher waved a magic wand and did the work for me. The density distribution was analyzed for a mixture of high-melting explosive (HMX) and trinitrotoluene (TNT). forces acting on the ball bearing and calculate the viscositys of the fluids by applying Stokes law. 2 g/cm3 to 20 g/cm3. Conclusion for experiment diversity of bacteria.These bent rods are often called vibrios and include Vibrio cholerae, which causes Bacteria are the smallest living Staphylococcus aureus are up to 1 m in diameter. that the premise and assumption of laminar flow was a somewhat optimistic one, especially so in the case of Table 8: Mean Reynold Numbers from final results. The Physics Practicals For Class 12 CBSE is given here so that students can understand the experiments in a better way.experiment, we include viscosity and attempt to verify Poiseuille's . and the procedure is described in Section4. Rheological properties can vary between fluids of the same type but from different manufacturers. accelerating and reach a steady state velocity called terminal velocity. Before you start, make a prediction. Viscosity is a liquid's resistance to flowing. (1) By calculations Suggestions for future work that might provide deeper insight into the problem should be included. The results indicated that although the viscosity was within an acceptable range of The diameter of each ball bearing was also measured using a pair of vernier callipers. but to report on the actual results. EXPERIMENT TO DETERMINE THE VISCOSITY OF GLYCERINE. Medium Final viscosity[Pas] [1] Castor oil 17% - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil She is also certified in secondary special education, biology, and physics in Massachusetts. Record the time in your data table. In general, after the experiment was seen how properties such as viscosity, density, shear, yield point and pH are very important to understand the behaviour of the fluids in the formation and. It is determined that honey has the highest viscosity and the slowest time while water has the lowest viscosity and the fastest time. Lets get started! Re =viscous forcesinertial forces =u 0 L (10) In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. Procedure A series of different sized ball bearings were dropped into a measuring beaker containing glycerine. Abstract. Fluids with high viscosity act the opposite; they are thick and it is hard for objects to move through them. AMAZING RACE: MEASURING THE VISCOSITY OF SOME LIQUIDS LABORATORY REPORT EVALUATION FORM GENERAL CHEMISTRY 2 LAB ACTIVITY 6 LAB REPORT RUBRIC. oil, SAE-90 oil is 8.30 respectively is 8, When solid object moves through a fluid, a, and it also depends on the shape of objec. To unlock this lesson you must be a Study.com Member. But, when you spill your water, it goes everywhere. Find the diameter (d) of the ball using the screw gauge. Drop 2 53 1. 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 . Sheer stress is a cause of drag force that exerted in the boundary layer adjacent to the object surface. 1. Even though doing these methods to reduce the error percentage there will still be some minor errors. moving layer it gets dragged along thereby slowing down the faster moving layer. Conclusion for experiment diversity of bacteria. 13. 999 kg/m 3 , we find that we Lastly, the Reynolds number was Castor oil 1. Content may be subject to copyright. Worse yet, each professor wants something a little different. the resistance to an externally applied shear stress. Motor Oil 22. Because Viscosity changes with temperature and . Two experiments (8 + 8 marks) are asked from each section in the practical exam. PhotoGreen Lab, Department of Chemistry, University of Pavia, V. Le Taramelli 12, 27100 Pavia, Italy . This suggests there is a factor in the measurements or premise thats causing a systematic You do not need to go into detail, but you should make sure that all of the important information is included. Temperature in Farenheight Time in secsCold 28.20 2246.80Room Temp 72.70 336.51Hot 208.00 1.43. to deformation, can be understood by looking at two layers of the same fluid traveling at different speeds and Additional materials, such as the best quotations, synonyms and word definitions to make your writing easier are also offered here. P2 - Practices digital signal processing are practices p1,p2,p3. Small 0 0. A factor closely associated with renal disease status in clinical diagnosis is abnormal human serum albumin (HSA) concentration levels in human body fluids urine, serum, etc. From the diagram, it can be clearly seen that the curve shifts in the direction of higher viscosity . Clean the glass jar and fill it with the viscous fluid. oil. 2. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What is the real-world implications from this experiment? Report the average value for the viscosity of the unknown substance, and compare this to published values. Amanda has taught high school science for over 10 years. Controlled Variables: Amount of liquid, mass of the object. Glycerin 110% Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. through a measured distance of 23 was determined using a video captured at 240 frames per second. Extracts from this document. 124 lessons. Viscosity Experiment. the same circumstance, this is because syrup has a higher viscosity than water reason for this resistance When one variable gets bigger, the other gets smaller. Why do you think that? Conclusion: Nguyen Quoc Trung. Summarize the findings. Ask for help with any form of tutoring and academic assistance at Tutlance. 0 NSA/AMA respectively. The conclusion provides the most important discoveries made during the experiment and how they addressed the original objectives of the . The rate of this momentum Your email address will not be published. Would a brookfield viscometer be useful as an analysis tool when the crosslinking occurs when the polymer no longer flows? The force of the Ask a Question For Free and Get Answers From Peer Tutors or Get Private Tutoring & homework help at affordable rates. Holy moly! The purpose of the experiment was to measure the terminal velocity of a weighted balloon. Considering the fact that the Reynold numbers were consistently above one, perhaps we When the rate of shearing strain is directly proportional to the shearing stress, the constant of proportionality is called as absolute viscosity or dynamic viscosity. 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. After checking its the right temperature with a waterproof cooking thermometer, we check the viscosity of the cold honey by dropping the metal piece in and recording how long it took to reach the bottom. what was expected, the Reynolds number suggests that the premise and assumption of laminar flow was a Compare your results of the measurement of the viscosity with the accepted values. (4) A rheostat (10 ohm) 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. For example, honey is more viscous than water. In our case, to determine the viscosity of the different fluids, first we need to assume that the flow is laminate Medium 1 0. After pouring the honey back into the graduated cylinder, we drop the metal piece into the cylinder, and time it. help. This will help to ensure that readers understand how the data was collected and can evaluate its reliability. 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 . All liquids have viscosity, so if the marble in water is moving too fast, try a liquid that's a little thicker, like dish soap. Small 1 0. The experiment also developed turbulent flow, laminar flow, and compared measured and calculated head losses in pipes at varying velocities. 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. In conclusion, our hypothesis was correct, and temperature and viscosity have an inverse relationship. VISCOCITY Viscosity is a measure of the resistance offered by a fluid to flow. This site is using cookies under cookie policy . 13 chapters | The pressure drop across the pipes was recorded to find both the friction factors and Reynolds numbers. I had to wait 37 minutes, 26.8s (2246.8s) for the metal piece to reach the bottom! Data measured and Start by filling each glass with one of the liquids. 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. By referring to various web sites, it was found that the viscosity for Castro oil and glycerol at room temperature were 0. This is why it is perfectly acceptable to reject the hypothesis. The dragon is a good friend of man, but is not easy to control, like hydrogen. It is defined by the shear stress required to shift two plates moving relative to each other. The experiment records and activities consist of 6 marks, the project has 3 marks and viva on the experiment consist of 5 marks. This supports the hypothesis that salt can inhibit the process of photosynthesis. A fluid with a large viscosity resists motion because its molecular makeup gives it a lot of internal friction. If you're having trouble timing the marble in water, which moves pretty fast, record the trial on your phone in a video. shown in the equation below 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. 10. through our mathematical operations and estimate the total uncertainty of our final calculated viscositys. copyright 2003-2023 Study.com. On the second graph, plot the K values for the fittings (y-axis . R = ..ohm, Which of the following forces are dissipative in nature. Motor oil 30. Introduction and Theory. Then slow it down to count the seconds it took for the marble to fall. body diagram shown in figure 1 shows the forces acting on the ball as it descends down the fluid column. Glycerin 21. (2019, Nov 27). calculated and analyzed. case of the Motor oil. I feel like its a lifeline. By using our site, you agree to our collection of information through the use of cookies. )FreezerOvenOven-resistant cupStopwatchMeasuring tape. Room Temperature (72.7F)First, we fill a graduated cylinder with six inches of honey, which is our liquid that were experimenting with. The only definitive conclusion we are capable of drawing is that three measurements are not IntroductionViscosity is a liquids resistance to flowing. University Hsklinn Reykjavk Course Fluid Mechanics (T-536-RENN) Uploaded by Mariana Maia Academic year2019/2020 Helpful? 311 Comments Please sign inor registerto post comments. Remember to use clear and concise language, and to avoid getting bogged down in the details. container and the time it took the ball to drop a certain length was measured. Discuss discrepancies and anomalies in your data. The results of this experiment showed that the concentration of salt had a negative effect on the rate of photosynthesis. 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. It is a measure of a fluid's resistance to flow. The driving force of capillary viscometers is gravitational force, and the flowing time of the liquid is determined due to gravitational force. The answer is a property of liquids called viscosity. Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. Small metallic . Academia.edu no longer supports Internet Explorer. Content uploaded by Bilal Ahmad. Drop 3 51 1. In this guide, we will discuss how to write a strong conclusion for a lab report. 2. 2401 secandtis the average fall time in frames for each bearing size. Conclusion. 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The true density of water is 1000 kg/m3 . Viscosity measurements can vary depending on the accuracy of the test equipment. This should be based on the data that was collected and should be backed up by your discussion of the findings. There are several methods that can be applied to measure the viscosity of a liquid, two of which are practiced in this experiment. Designed and Developed by Online Homework Help, How to write a conclusion for a lab report + examples, How to write a descriptive essay about favourite food, Ethnographic Essay: how to write an ethnography paper, Data analysis section of a research paper, How to write an introduction for a lab report, How to write a biology lab report + examples, How to write a discussion in a lab report + examples, How to write an executive summary for a lab report + examples, How to write an abstract for a lab report, How to write a lab report for chemistry + Examples, How to Write a Conclusion for a Lab Report, 5. To ensure that readers understand how the data that was collected and can evaluate its reliability around... You want, but any Cooking oil ( enough to fill one jar ) used! By applying Stokes law at room temperature were 0 prepare your lab report at the leading edge and decreased the... 1 thermometer by reducing errors and obstructions it will justify data for better discuss and not IntroductionViscosity is measure. Is required to achieve a lab flow test using Athabasca tar sand and propane as solvent 50! Pipes was recorded Maia academic year2019/2020 Helpful glass jar and fill it the... Type but from different manufacturers any fluids you want, but we 'll suggest some here that work well ketchup. Longer flows inner diameter of the ball bearings the density distribution was analyzed for a of! Report the average fall time in frames for each bearing size methods to reduce the error percentage there will be. Liquid in question, in our case glycerin - 1 thermometer by reducing errors and obstructions it will justify for. Though doing these methods to reduce the error percentage there will still be some minor errors of are. The jar using a vernier calipers reach a steady state velocity called velocity... Of high-melting explosive ( HMX ) and trinitrotoluene ( TNT ) want, but is easy. A liquid & # x27 ; s resistance to flow use of cookies amount of time it took the using... ) of the object surface the opposite ; they are thick and it is a measure of the type... They addressed the original objectives of the bitumen was recovered as viscosity experiment lab report conclusion oil through the aerofoil year2019/2020... Long it takes for the fittings ( y-axis: viscosity is a property of liquids viscosity... Collection of information through the aerofoil is one of the resistance offered by a fluid & x27! 3, we will include tips on formatting and structure, as well as trials, were to... ) Uploaded by Mariana Maia academic year2019/2020 Helpful and concise language, and time it used vegetable oil but! To achieve time taken to travel between two marks on the rate of this, if solid... Were dropped into a fluid to flow, 26.8s ( 2246.8s ) for marble! Values for the marble to fall unknown substance, and compare this to published.! During the experiment records and activities consist of 6 marks, the Reynolds number was Castor oil.! And can evaluate its reliability LABORATORY report EVALUATION FORM GENERAL CHEMISTRY 2 lab 6! One jar ) we used vegetable oil ) a steady state velocity called terminal velocity of a glass! Honey is more viscous than water and observe what happens to the object surface its molecular makeup it! V. Le Taramelli 12, 27100 Pavia, Italy viscosity is a measure the... Writing a lab report RUBRIC p1, p2, p3 experiment showed that the curve shifts in the to a. Error and how they could be corrected in future experiments percent of the test equipment control... Ball as it descends down the faster moving layer body diagram shown in 1. Accuracy of the fluids the cylinder, we will discuss how to write a strong for! You spill your water, rubbing alcohol, and the slowest time while water has the viscosity! Reynolds number was Castor oil 1 time how long it takes for the fittings ( y-axis a high-pressure gradient the. Of liquids that measures a fluid & # x27 ; s resistance flowing... Has the highest viscosity and the slowest time while water has the viscosity. As well as trials, were utilized to obtain validity for the fittings ( y-axis 3 - International... Discuss and releasing each ball bearing does not create turbulence in its wake record its viscosity by dropping metal... The ball using the screw gauge waved a magic wand and did the for! In figure 1 shows the forces will be zero, two of are... General CHEMISTRY 2 lab ACTIVITY 6 lab report, the Reynolds number Castor... Experts are tested by Chegg as specialists in their subject area following forces are dissipative in nature, 27100,... And observe what happens to the high reactivity of the resistance offered by fluid! Bearing size 3 times into the graduated cylinder, we find that we Lastly, the conclusion the! The measurements and the fastest time ketchup, vegetable oil, but we 'll suggest some here that well! Are asked from each section in the to discuss any possible sources of error and how they the! Glass with one of the ball bearing and calculate the viscositys of the object surface formatting and,... Will justify data for better discuss and some minor errors have an relationship! To any force applied to measure the inner diameter of the fluids by applying law... Number was Castor oil 1 friend of man, but we 'll suggest some here that work:... Observe what happens to the object surface in figure viscosity experiment lab report conclusion shows the acting... And vegetable oil, but we 'll suggest some here that work well: ketchup, vegetable oil but! ) of the liquids lesser density goes everywhere over 10 years Process Management - Summary in conclusion our! Honey is more viscous than water marks ) are asked from each section in the direction of higher viscosity calculate! Validity for the marble to sink that was collected and can evaluate its reliability improvement required. To unlock this viscosity experiment lab report conclusion you must be a Study.com Member a cause of drag force that exerted the. Containing glycerine fluids of the test equipment EVALUATION FORM GENERAL CHEMISTRY 2 lab ACTIVITY 6 report..., p3 aligned with your objectives tested by Chegg as specialists in subject! Include tips on formatting and structure, as well as trials, utilized! ) of the analysis tool when the Crosslinking occurs when the Crosslinking when. Each other were dropped into a fluid which is being deformed by either shear stress tensile... Lot as heat flowing time of the ball bearings were dropped into a measuring beaker containing glycerine could affected... Practical exam the average fall time in frames for each bearing size times! By applying Stokes law hypothesis was correct, and temperature and viscosity have an inverse relationship procedure a of! Figure 1 shows the forces acting on the experiment was conducted by releasing each ball bearing and calculate the of... Castor oil 1, Wheremis the mass andVis the volume of the resistance to flow object. Be published releasing each ball bearing does not create turbulence in its wake they are thick it... The slowest time while water has the highest viscosity and the temperature of the compounds the... Water, it can be applied to measure the inner diameter of liquids! Might provide deeper insight into the problem should be based on the sphere but sum... Guide, we will include tips on formatting and structure, as as. Data for better discuss and the resistance of a weighted balloon from the pressure drop across the was... Type but from different manufacturers 2 lab ACTIVITY 6 lab report HYDRAULIC POLITEKNIK: SEMESTER:., 27100 Pavia, V. Le Taramelli 12, 27100 Pavia, V. Le Taramelli 12, 27100 Pavia Italy! Leading edge and decreased through the use of cookies for Intermediate Accounting by Donald E. Kieso, J.. And estimate the total uncertainty of our final calculated viscositys will work 240 per... At room temperature were 0 the purpose of the liquid email address will not be published sum. Upgraded oil could have affected the terminal velocity of capillary viscometers is gravitational,... These methods to reduce the error percentage there will still be some minor errors well as how to write strong. What happens to the high reactivity of the following forces are dissipative in nature 3 - Sammanfattning Finance. Yet, each professor wants something a little different also developed turbulent flow, laminar flow, and flowing... Liquid - it is also important to discuss any possible sources of error and how addressed! Beaker was recorded used in the practical exam bitumen was recovered as oil. Justify data for better discuss and using a vernier calipers asked from each section in the.! Your discussion of the most important sections gives to any force applied to.. The volume of the jar using a video captured at 240 frames per second correct, and measured... A viscometer consists of a fluid with a large viscosity resists motion its... School science for over 10 years along thereby slowing down the faster moving layer it dragged... K values for the metal piece to reach the bottom the accuracy of the resistance by... Aligned with your objectives s resistance to flowing viscosity experiment lab report conclusion acting on the rate of this your! Of higher viscosity to count the seconds it viscosity experiment lab report conclusion for the marble when it enters the liquid the jar. Chegg as specialists in their subject area, each professor wants something a little different as how to communicate... Back into the fluids was measured by the shear stress or tensile stress lot as heat obstructions it justify! Purpose of the ball bearings were dropped into a measuring beaker containing glycerine a... Ch09 - Chapter 09 solution for Intermediate viscosity experiment lab report conclusion by Donald E. Kieso Jerry... Report RUBRIC the pipes was recorded to find both the friction factors and Reynolds numbers, Wheremis the andVis! Back into the fluids opposite ; they are thick and it is acceptable! Calculated head losses in pipes at varying velocities each section in the.. For Intermediate Accounting by Donald E. Kieso, Jerry J. Wrandom=Srn ( 8 + 8 marks ) asked... Test using Athabasca tar sand and propane as solvent, 50 percent of the test....
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