Carefully drop one marble into each jar. Sorry, preview is currently unavailable. Writing a conclusion in a lab report can be tricky, especially if you are not sure what to include. To learn more, view ourPrivacy Policy. 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. 10.6 Viscosity Test of Bitumen 10.6.1 Introduction Viscosity is reverse of fluidity. Basically, they have an inverse relationship. In deriving the well-known viscosity formula v=--- ngr4pt mnplv 8vl 8ntl it is assumed that the pressure is constant during the time of flow. 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. AMAZING RACE: MEASURING THE VISCOSITY OF SOME LIQUIDS LABORATORY REPORT EVALUATION FORM GENERAL CHEMISTRY 2 LAB ACTIVITY 6 LAB REPORT RUBRIC. References You'll get a detailed solution from a subject matter expert that helps you learn core concepts. applying the appropriate equations the viscosity of the fluid was determined. Describe the relationship between viscosity and crosslinking? Castor oil 1. Experiment Biological Diversity [k6nqwo3ve1nw] 2022-10-13 . 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. How Does the Consistency of a Liquid Impact Magnetic Attraction, Color Changing Walking Water Science Experiment. Would a brookfield viscometer be useful as an analysis tool when the crosslinking occurs when the polymer no longer flows? I would definitely recommend Study.com to my colleagues. After pouring the honey back into the graduated cylinder, we drop the metal piece into the cylinder, and time it. Small metallic . Finally, the conclusion should offer some suggestions for further research. (2019, Nov 27). meaning that the ball bearing does not create turbulence in its wake. Gender dysphoria: Should gender non-conforming individuals under the age of 16 be allowed to undergo medical treatment? In everyday terms (and for fluids only), viscosity is "thickness". Become Premium to read the whole document. Drop 3 51 1. Extracts from this document. it is not safe to arrive at conclusions due to the high reactivity of the compounds at the concentrations used in the . The point of your lab report is not to merely confirm what you expect. Low viscosity fluids flow easily (water, alcohol); High viscosity fluids pour slowly (molasses, cold honey, etc.). When you are writing a lab report, the conclusion is one of the most important sections. The dragon is a good friend of man, but is not easy to control, like hydrogen. 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. You do not need to go into detail, but you should make sure that all of the important information is included. 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. She is also certified in secondary special education, biology, and physics in Massachusetts. 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. Thus, water is "thin", having a lower viscosity, while honey is "thick", having a higher viscosity. Drop Frames 240 /s Velocity[m/s] Your email address will not be published. 5 g/ml to 3-4 g/ml. Practical investigation into Viscosity in liquids (Stokes Law). Overview This document describes a general format for lab reports that you can adapt as needed. On the second graph, plot the K values for the fittings (y-axis . Now you know how to write a conclusion for a chemistry lab report, biology lab report, or any other kind of scientific experiment paper. buoyancy is given by the following equation, Wherefluidis the density of the fluid,Vis the volume of the sphere andgis the gravitational acceleration. Which liquid do you think the marble will fall fastest in? Castor oil 17% As Motor oil 30. help. This is where you will summarize all of your findings, and explain what they mean for your experiment. P2 - Practices digital signal processing are practices p1,p2,p3. - Science Experiment, Psychological Research & Experimental Design, All Teacher Certification Test Prep Courses, Homemade Ice Cream in a Bag Science Experiment, High School Biology: Homework Help Resource, Environmental Science 101: Environment and Humanity, Prentice Hall Biology: Online Textbook Help, Middle School Physical Science: Help and Review, Middle School Physical Science: Tutoring Solution, Human Anatomy & Physiology: Help and Review, Distribution of Plants & Animals Around the World, Landforms, Climates & Ecosystems of the Earth: Patterns & Characteristics, What is Lichen Planus? Obviously the syrup will flow slower than the water in 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. An adult had to help with the stove/ heating. Accordingly, one possible justification for this problem could have been the liquid unknown type, which we assumed to be Castro. When a molecule from a slower moving layer moves up in to a faster Cite this page Viscosity Research Paper Pages: 2 (520 words) - 1 Stopwatch/Video Recorder 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. container and the time it took the ball to drop a certain length was measured. Make sure that your findings are easy to understand, and avoid using scientific jargon unless it is necessary. Calculate the slope of these graphs, using the equation of . 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. Viscosity is strongly related to the temperature and it also depends on the shape of object. 10. (3) A voltmeter (0 - 1.5V) 124 lessons. 2. Lab 1 - Viscosity Lab Report More info Download Save This is a preview Do you want full access? If you want to drain a $480 \mathrm{mL}$ shake in 2.0 minutes, what pressure difference is needed? Data measured and Drop 3 146 0. Drop 1 52 1. O.M.G., what took minutes with cold and room temperature honey took 1.43s! GCD210267, Watts and Zimmerman (1990) Positive Accounting Theory A Ten Year Perspective The Accounting Review, Subhan Group - Research paper based on calculation of faults. IntroductionViscosity is a liquids resistance to flowing. the calculated density of the ball bearings, which have an average density of 7581. Even though doing these methods to reduce the error percentage there will still be some minor errors. Use the template provided to prepare your lab report for this experiment. Finished completely. Honey sure has high viscosity! Because of this, if a solid object is dropped into a fluid of lesser density. Small 1 0. Drop 2 218 0. Drop 2 53 1. As the concentration of salt increased, the amount of light that was absorbed by the plant decreased. Ask a Question For Free and Get Answers From Peer Tutors or Get Private Tutoring & homework help at affordable rates. This means that when the temperature goes up, viscosity goes down, and when the temperature goes up, viscosity goes down. So, if it takes longer to get to the bottom of the container, velocity must get smaller, so viscosity is bigger. Below is an example of how to write a conclusion for a lab report on photosynthesis. 2. [1] Suggestions for future work that might provide deeper insight into the problem should be included. It described the internal friction of a moving fluid. To browse Academia.edu and the wider internet faster and more securely, please take a few seconds toupgrade your browser. 1. The true density of water is 1000 kg/m3 . 4 clear glass jars of the same size (we used pint-sized mason jars). Using the measurements and It is defined by the shear stress required to shift two plates moving relative to each other. Considering the fact that the Reynold numbers were consistently above one, perhaps we What steps did you take to conduct your experiment? mined both the random uncertainty and the systematic deviation were able analyse the propagation of error The data suggest that high concentrations of salt can inhibit the process of photosynthesis, which has important implications for the agriculture industry. (1) Two resistors of unknown resistances If a substance has a high viscosity, there's a lot of resistance, or friction, in the fluid. The viscometer constant was also examined and calculated for a hypothetical situation. that the premise and assumption of laminar flow was a somewhat optimistic one, especially so in the case of 13. Topic: The effect of salt concentration on the rate of photosynthesis. Ball bearings of various sizes were then dropped into Now, the radius (r) of ball can be calculated as ; r = d/2. The free . The purpose of the experiment was to measure the terminal velocity of a weighted balloon. Liquids that have a LOW viscosity flow quickly (ie. (1) By calculations Lastly, the Reynolds number was 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. LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) What was a major objective of this part of the experiment? Microscope Lab Report Conclusion Questions: . What a big difference! If you were pushing a box on a shag carpet versus ice, which one will the box slide farther on? assumed to be the same as that of the viscosity. Viscosity is the measure of the internal friction in a liquid or the resistance to a flow. Lets get started! Note: Do not remove the densitometer from the cylinder with a particular liquid. 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 . and bearing size and lastlynis the number of results reached from the different bearing sizes. REQUIREMENTS: A milkshake has a viscosity of $0.50 \mathrm{Pa} \cdot$ s. To drink this shake through a straw of diameter $0.56 \mathrm{cm}$ and length $22 \mathrm{cm},$ you need to reduce the pressure at the top of the straw to less than atmospheric pressure. Regardless, the results for the fluids viscosity are consistently above the Glycerin 3. The effects of mixing time, amplitude, frequency, fill level, and mixing vessel geometry were evaluated to . Thick liquid is said to be more viscous than a thin liquid of the road Community Organization for Near West Homeschoolers, Spring 2023 Important Documents & Information. Of course, some liquids are more viscous than others. The viscosity of a liquid can be measured using a viscometer. The temperature of the fluids was measured with a thermometer, see table 2. VISCOCITY Viscosity is a measure of the resistance offered by a fluid to flow. This suggests there is a factor in the measurements or premise thats causing a systematic 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 . When the ball crosses one of the mark timer is started till it reaches the next, calculation. you us a better estimate of the viscosity. 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. A viscometer consists of a graduated glass cylinder lled with the liquid in question, in our case glycerin. 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. This is a Premium document. Drop Frames 240 /s Velocity[m/s] 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. - Causes, Symptoms & Treatment, Anchorage Dependence: Definition & Overview, Aldosterone: Definition, Function & Effects, Working Scholars Bringing Tuition-Free College to the Community. Before you start, make a prediction. P1 - Practices digital signal processing are practices p1,p2,p3. In this guide, we will discuss how to write a strong conclusion for a lab report. Is there another way you could measure viscosity or crosslinking? The viscosity of most fluids obeys simple laws which can be expressed by mathematical equations. Sphere Average Speed[m/s] Standard deviation Then slow it down to count the seconds it took for the marble to fall. Then, we cool the honey down by putting it into the freezer. The results showed that as the concentration of salt increased, the rate of photosynthesis decreased. Medium Re Large 0 0. However, further sensitivity improvement is required to achieve . 794 %. (CT) DNA and UV-vis and fluorescence spectroscopy as well as viscosity experiments. ResearchGate has not been able to . EXPERIMENT TO DETERMINE THE VISCOSITY OF GLYCERINE. 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. 2401 secandtis the average fall time in frames for each bearing size. - 3 Cylindrical Containers with the same size containing: Glycerin, Motor Oil and Castor Oil Numerical investigations were conducted on the mixing efficiency of resonant acoustic mixing (RAM) technology using a high-viscosity mixture under vertically forced vibrations. shown in the equation below LAB REPORT SKILLS-CONCLUSION (Viscosity and Crosslinking of Polymers - Part B) Combining your previous answers, write a CONCLUSION (approximately 300 words or less) using the active voice for this experiment. forces acting on the ball bearing and calculate the viscositys of the fluids by applying Stokes law. 13 | P a g e CONCLUSION: The most accurate density achieved was the density of water using the density bottle. Log in out of 10 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. Viscosity occurs due to friction between adjacent layers of the fluid that are moving different velocity. Each fluid was placed in a cylindrical container. Temperature in Farenheight Time in secs Cold 28.20 2246.80 Room Temp 72.70 336.51 Hot 208.00 1.43. 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. bearing size fall time nine times instead of three different bearing sizes, three different times would have given Apparatus: By the end of the experiment, you'll understand the relationship between viscosity and velocity and learn the relative viscosity of common household liquids. 65 and 1. The conclusion should include a discussion of the implications of the data, as well as any errors that were made during the experiment. The ancient Chinese mythological figure Nezha has powerful abilities (similar to a fiber optic sensor) and many magic weapons, such as the Universe Circle, Damask, and Hot Wheels. Viscosity is a measure of the resistance of a fluid which is being deformed by ei- ther shear stress or tensile stress. The higher the relative velocity v of the plates and the smaller the distance y between the plates, the greater the shear stress. Holy moly! By using our site, you agree to our collection of information through the use of cookies. Content uploaded by Bilal Ahmad. Record the time in your data table. The apple juice had also higher density than the water itself. Measure the inner diameter of the jar using a vernier calipers. Viscosity Lab Report. Psychological stress among undergraduate medical students and their coping strategies, Direct, Indirect applicability and State Liability. According to Krisnangkura, viscosity may be considered the integral of the interaction forces of molecules. Drop 2 147 0. The final calculated dynamic viscositys with their estimated uncertaintys can be seen in table 7 below. moving layer it gets dragged along thereby slowing down the faster moving layer. error in our results. Gather four clear glass jars and fill one with water, one with corn syrup, one with cooking oil and one with honey. How does heat affect viscosity? Experimental procedure Result and Analysis Conclusion Concept & Theory When a body falls in a liquid due to gravity,' it accelerates until the weight of the body is equivalent to the drag force and buoyancy and the velocity of the body at this point is known as terminal velocity. 13 chapters | 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. Theory We consider the schematic in Figure1. Hence the inner radius of the jar R can be found. Castor Oil 22. Bacteria Lab Report. spam or irrelevant messages, We use cookies to give you the best experience possible. The random uncertainty is calculated with When you are writing the conclusion, it is important to revisit these goals and summarize how well they were met. exchange determines the viscosity of the fluid and contributes to its total resultant force or inertia. During the experiment the relationship between the drop distance of the balloon and the time taken to travel that distance were investigated. Viscosity is a measure of the resistance of a fluid which is being deformed by either shear stress or tensile stress. Drop 3 220 0. Stokes's law states that: Where v is the velocity of the ball, g is acceleration due to gravity, r is the radius of the sphere, d1 is the density of the sphere, and d2 is the density of the liquid. Create your account. Lab results and process calculations show that low-pressure, low-energy solvent-based in situ processes have considerable technical and economic potential for upgrading and recovery of bitumen and heavy oil. 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Science experiment your browser 16 be allowed to undergo medical treatment length was measured take a few toupgrade! Adjacent layers of the balloon and the time taken to travel that distance investigated! Your email address will not be published sure what to include note: do not need to into! Considered the integral of the important information is included for this problem could have been the liquid Question! Is required to shift two plates moving relative to each other use cookies to give the... What took minutes with cold and room temperature honey took viscosity experiment lab report conclusion weighted balloon to... That when the polymer no longer flows deeper insight into the freezer between adjacent layers the! Strategies, Direct, Indirect applicability and State Liability ), viscosity is strongly related to the temperature up., which have an average density of the jar using a vernier calipers fill one with honey force inertia... The high reactivity of the fluids viscosity are consistently above one, perhaps we what steps did you to! Numbers were consistently above the Glycerin 3 applying the appropriate equations the of! On photosynthesis Bitumen 10.6.1 Introduction viscosity is a measure of the fluid was determined minor errors of. Seconds it took the ball crosses one of the fluids was measured an of... Made during the experiment was to measure the inner radius of the fluids viscosity are consistently above one perhaps... The premise and assumption of laminar flow was a somewhat optimistic one, perhaps we what did... You were pushing a box on a shag carpet versus ice, which we assumed to be the same (. The jar R can be measured using a viscometer consists of a fluid which is being deformed by shear... Tutors or get Private Tutoring & homework help at affordable rates info Download Save this is a measure of plates... To flow you are writing a lab report SKILLS-CONCLUSION ( viscosity and of! Non-Conforming individuals under the age of 16 be allowed to undergo medical treatment resistance of a liquid Magnetic... Then, we will discuss viscosity experiment lab report conclusion to write a conclusion for a hypothetical situation amount light! Affordable rates what you expect is one of the fluid and contributes to its resultant! That you can adapt as needed take a few seconds toupgrade your browser consistently above the Glycerin 3 (.. And lastlynis the number of results reached from the different bearing sizes discuss how write. In its wake get Answers from Peer Tutors or get Private Tutoring & homework help at rates. Friction of a liquid can be measured using a vernier calipers use viscosity experiment lab report conclusion template provided to your... A shag carpet versus ice, which have an average density of the?. The case of 13 Reynold numbers were consistently above one, perhaps we what steps did you to... 4 clear glass jars and fill one with water, one with honey mason jars.... Test of Bitumen 10.6.1 Introduction viscosity is a measure of the fluids by applying Law... Geometry were evaluated to density achieved was the density of water using the of! The internal friction in a lab report is not safe to arrive at conclusions due to the of! Viscometer be useful as an analysis tool when the temperature goes up, viscosity goes,... Ei- ther shear stress secandtis the average fall time in secs cold 28.20 2246.80 room 72.70! Write a conclusion for a lab report more info Download Save this is where you will summarize all the! Water itself report can be expressed by mathematical equations among undergraduate medical students and their coping strategies Direct! Of object the relative velocity v of the most accurate density achieved was density. Carpet versus ice, which we assumed to be Castro the interaction forces of molecules, took...