...AP Physics Lab Reports 1. All lab reporting will be done on binder paper or graph paper as the lab is being conducted. You may use the front and back of each page. If you want to delete something, simply cross it out. All work should be neat and legible. 2. Prepare as much as possible prior to the actual lab day (such as title, problem or purpose, materials, and background information) ---just to give you more time to work with the equipment. 3. October 12, 2014 Jamie Smith P1 Partners: Roy Rogers Dale Evans October 12, 2014 Jamie Smith P1 Partners: Roy Rogers Dale Evans In the upper corner of the first page of each lab, write your name, the date, period, and names of lab partner(s). Example: 4. Give your lab a title. (Creativity is appreciated, but a subtitle should be more descriptive of the procedure.) Example: “Shooting Hoops” (Projectile Motion to a Raised Target) 5. State the problem or purpose of the lab. Example: Purpose: To determine the air drag coefficient for a falling coffee filter. 6. List the materials needed. 7. Provide a brief description of the procedure and/or diagram of the set-up. A labeled diagram is often the quickest and easiest way to do this. 8. Provide a background with necessary equations, derivations of equations, safety comments, and notes about procedure that will reduce error….anything that is important in preparing, setting up...
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...TECHNICAL WRITING Report/Worksheet/Writing Task: Lab number 2 Full Report: Partial Report: X Lab section: J NAMES: Shameek Agarwal, Date Turned In: 2/4/2012 , , Date Returned by TA: ____________________ Grader: _____________ The effort / participation in this laboratory and lab report is divided as follows: Name: Shameek Agarwal, primarily responsible for sections: Name: Name: Name: , primarily responsible for sections: , primarily responsible for sections: , primarily responsible for sections: By submitting this lab report electronically, I/we are agreeing to the following honor pledge, which is consistent with the rules described in the laboratory manual, the syllabus and in class: On my honor, I / we pledge that I / we have neither given nor received inappropriate aide in the preparation of this lab report. The only laboratory reports from prior semesters that I / we have viewed, reviewed, or used in any way were provided by the laboratory TAs during office hours. I / we have reviewed the consequences of using prior laboratory reports in the laboratory manual. GRADE: / Grader Initials: ________ COMMENTS (grader / students) ME 3057 Score Tally for Reports: Abstract: ____________ / Introduction and Procedure: ____________/ Experimental Results: Discussion: Conclusions: Display Format: ____________ / ____________ / ____________ / ____________ / ME3057, Spring 2012 Abstract The objective of this lab was to illustrate the concepts while measuring properties...
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... Name______________________________________________ IB Guide to Writing Lab Reports Standard and Higher Level Chemistry 2010-2011 Table of Contents page 1 Explanations, Clarifications, and Handy Hints page 2 - 13 IB Laboratory Evaluation Rubric page 14 - 15 Formal Lab Report Format page 16 Error Analysis Types of Experimental Errors page 17 Error Analysis: Some Key Ideas page 18 Precision and Accuracy in Measurements A Tale of Four Cylinders Assessment of Errors and Uncertainties in IB Lab Reports Explaining Terms and Concepts in Error Analysis page 19 - 20 page 21 Mathematics of Evaluating Accuracy and Precision page 26 - 27 Rejection of Data page 28 More Examples of Propagating Error page 29 - 31 page 22 - 25 Typical Instrumental Uncertainties page 32 Checklist for Writing IB Lab Reports page 33 - 34 Please read carefully and keep this handy reference for future use in writing exemplary lab reports. Page 1 IB Guide to Writing Laboratory Reports Explanations, Clarifications, and Handy Hints The nature of science is to investigate the world around you. An inquiring mind is essential to science. Experiments are designed by curious minds to gain insight into wonder-producing phenomena. Hopefully, this process of designing experiments, doing experiments, thinking about experimental results, and writing lab reports will tremendously benefit YOU! IB Chemistry is the challenge you have...
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...Lab Report Format Data is collected in groups. Lab reports may be submitted individually or as a group. If the report is written by the group, all members must contribute to the report. Remember that good technical writing is terse. Organization and readability should be a priority, as you are communicating your work to others. Use proper English; you will be graded on your grammar and syntax. Finally, do not submit work with spelling errors – all of the software you are using has spell-check capability. Requirements • A word processor with the ability to format mathematical equations. Microsoft Word has an equation editor and is installed on all lab computers. • A spreadsheet capable of performing extended linear regression analysis. The LoggerPro application is capable of performing both linear and non-linear curve fitting, and is the best choice. Microsoft Excel is another alternative. Each section of the report is discussed briefly below. Be sure to look at the sample report to see a finished product (compare it with the original lab experiment handout). Word Processor Document (60 points) Cover Page (5 points) Include the number and title of the experiment, your name, class, section, the date the report was submitted, and the names of all lab partners who worked with you. Objective (5 points) This is the main objective of the experiment. This should be no more than 15 – 20 words. Theory (10 points) Present and explain each equation used in your analysis. This...
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...Lab 1: Measurements What is the scientific method? This week we will start with a brief discussion of the scientific method in general. This will be followed by a more detailed description of how the scientific method will be applied in this course. In the end, this discussion will give you the format for the lab reports you will write over the next 15 weeks. Our first lab will focus on taking good measurements, graphing techniques, and how to extract the important information from the data to reach a conclusion. You will be measuring round objects, so you are invited to bring different-sized round objects to class on the first day. In preparation for class, consider how round objects can be measured. 1) Brainstorm to develop the testable question. How does one measure the roundness of a round object? 2) Develop the hypothesis. Note: While the relationship in this lab is very simple and should be well known, this will not always be the case. This lab is meant to introduce the lab format without too many complications. If the diameter is increased, then the circumference is increased in a directly linear proportional manner. 3) Brainstorm for variables: The two variables that make up the testable question must be included. Identify the variables. Independent: Diameter Dependent: Circumference Control: Round objects 4) Develop the design table. | |D(cm) ...
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...Phvsics Lab Report Format (Sample Report Attached) General Remarks: Writing a lab report is the only way your TA will know what you have done during the lab and how well you have understood the process and the results. Part of your lab experience should be learning how to organize and present your work in a scientific way. There is no framework that can be used as a "one size fits all", therefore this sample lab report should only be used as an example. Any lab report should have the following features: o It should be concise but should also contain the necessary details and well-developed explanations. It should be organized. You should enable the reader to quickly find the information he or she may be interested in. It should contain all the relevant information and reasoning. You should enable the reader to validate your conclusion. A possible way to achieve this is using the following framework: o o . o o o o . Obiective: State what you want to achieve in this experiment A formal way to do this is to state a question or hypothesis that you want to address. Method: You should include a summary of the lab procedure in your words; do not merely copy what is in the manual. This section should demonstrate your understanding of what exactly you measured and how you measured it. Data: In this section you should include the raw data you measured; generally, an estimate of the error should accompany all measured values. Be sure to present...
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...EXPERIMENT 2 Sampling Errors Introduction Representative sampling of materials prior to chemical analysis has been recognized to be as important as the subsequent steps in the analysis. The overall variance of an analysis has several components – including sampling, sample extraction and preparation, and instrumental random errors: s2total = s2sampling + s2prep + s2instr If any one of the variances is significantly larger than the others, there is little point in trying to reduce the others, since the dominant source of error will determine the overall uncertainty. For some analytical problems, the sampling variance can dominate the precision of the entire analysis since real-world samples are often difficult to sample in such a way that a portion for analysis is representative of the whole. Many sampling problems arise from inhomogeneities in almost any sample, including gases, liquids as well as solids mixtures. The sampling of solid mixtures is straightforward to explore, and represents an important area for analytical chemists as well as for compounding chemists who prepare pharmaceuticals and composite materials. Origin of Sampling Variance: [Adapted from “Quantitative Chemical Analysis”, Daniel Harris, 7th edition.] Where does sampling variance come from? Consider a randomized mixture of two kinds of particles. The theory of probability allows one to estimate the likelihood that a sample drawn from the mixture has the same composition...
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...Laboratory Report Style Guide A formal lab report is how you communicate the details of an experiment to the outside world. There are many ways of writing up a laboratory experiment. You have probably already done different forms in science and biology classes. The format we will use in this class is called “journal article format,” because it is the same format that scientific journals require for published articles. More practically, it is the format required by most colleges. It more or less resembles the format of an English term paper. Sections Summary A standard journal article laboratory report is organized into the following sections: Title: A single sentence fragment (no verb) that describes your experimental objective and gives some indication of the method (procedure). Abstract: A one-paragraph summary of the entire experiment—your procedure, results, and analysis. Introduction: A description of the scientific background for your experiment, including any previous experiments that your experiment builds on. (Remember to cite your sources!) The final sentence (analogous to the thesis statement in a term paper) is the objective of your experiment. Materials and Methods: A detailed description (in paragraph format) of the procedure for your experiment. Results: Your data, as you observed/recorded it. Note that this section is only for data that you observed or measured directly. Your analysis (including calculations) belongs in the Discussion section...
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...THERMOCHEMISTRY OF NaOH AND HCl LAB Overview Teacher’s Instruction: Find the Molar Heat of Reaction for the NaOH reaction. Then, predict and calculate the change in enthalpy (ΔE) and change in heat (ΔH) when 5.00g NaOH reacts completely with HCl. Reaction Equation: NaOH(s) + HCl(aq) -> NaCl(aq) + H2O(liq) Net Ionic Equation: Na(OH)(s) + H+(aq) -> H2O(liq) + Na+(aq) The Big Question: If we combine solid NaOH and aqueous HCl, how will the temperature change? What will the change be with, specifically, 5.00g of NaOH? Scientific Background and Principle: WELL, I’ll have you know that we got our hands on a fancy-schmancy Lab Quest 2 with a temperature probe. Now this device allows us to accurately record the temperature of a given entity over a period of time; as such, by having the Lab Quest record the temperature of the system, we were able to gather the total temperature change for the reaction. In theory, the temperature should increase by 53.10o Variables * Independent Variable: Amount of NaOH * We had a theoretical value for temperature that was dependent on the amount of NaOH used; as such, we set our amount at a certain point to achieve that temperature. * Dependent Variable: Heat of Reaction (Temperature) * We measured the temperature of the reaction throughout its duration, which would have varied in intensity and duration based on the amount of NaOH we used * Controlled Variables * Light-- by enclosing the reaction in darkness...
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...8/27/2014 700+ level GMAT SC Practice Questions WARM UP QUESTIONS FOR THE UPCOMING FREE WEBINAR “THE KEY TO SCORE 760 ON THE GMAT” Payal Tandon E-GMAT LLC ©e-GMAT LLC. Unauthorized copying for commercial and competitive purposes is not allowed. CONTENTS Free WebinaR: The Key to score 760 on the GMAT .................................................................................................. 2 Attend this webinar to learn the strategies to score 760. You’ll learn:..................................................... 2 Webinar Details .............................................................................................................................................................. 2 Instructor .......................................................................................................................................................................... 3 Solve These 700 level SC Questions ................................................................................................................................. 4 Question 1 .............................................................................................................................................................................. 4 Question 2 .............................................................................................................................................................................. 4 Question 3 .........................................
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...Yangyang Bian Phys 1101W Section 100 TA: Roxanne Radpour November 15, 2009 Lab 5 Problem #1 Kinetic Energy and Work Problem description and prediction: In this lab, we release a cart from different heights of the incline and then investigate how the final velocity depends on its initial release height and what the relation between the work and the change in kinetic energy. EK1=0 EK2=1/2mv2 The work is done by the x-component of gravity. W=mgsinθ×L=mgH ( unit is kg·m/s2·m=kgm2/s2) v2-0=2as v2=2as=2gsinθ×L=2gH v= (2gH)1/2 The final velocity depends on the height. It is not necessary related with the angle and mass. EK2=1/2mv2 (unit is kgm2/s2) EK2-EK1=1/2mv2-0=1/2m·2gH=mgH W=EK2-EK1 The work done by the gravity on the cart is equal to the change in kinetic energy. Procedure: 1. Practice: Vary track angles, release heights, and cart masses. And then release the cart form the rest. During each trial, measure the time when the cart reaches to bottom of the incline. 2. Vary release heights: Set the track angle which is 4.9° and the mass which is 190g. Release the cart from three different heights and take video for all of them. Data: H1=24cm, L1=153cm sinθ=0.157 θ=9.02° H2=13cm, L2=153cm sinθ=0.085 θ=4.9° 1. Practise: Change angles θ | 4.9° | 9.02° | t | 1.68s | 1.72s | Change masses m | ...
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...To do Lab Report for Single and Double Replacement reactions : This is a formal lab report. It must be typed or written by hand with blue or black ink. Make sure that you include the following: 1. Title 2. List of Materials 3. Safety that includes MSDS risk assessment for all the materials used ( instructions were given to you already and they are in Moodle) 4. Pre-lab questions 5. Data Tables with the results obtained ( observations and predictions) 6. Post Lab: Part I : Single Replacement Reactions a. For every reaction that took place you must write the balanced chemical equation b. Which metal reacted the most? c. Rank your metals from more to least active Part II: Double replacement Reactions a. For every reaction where you observed precipitate, write the complete balanced molecular equation, the complete ionic equation and the net ionic equation; use the solubility rules to identify the precipitate and the states of matter of each substance participating in the reaction. b. Which cation produced the most number of precipitates? c. Write general rules of solubility that you observed. 7. Final Conclusion and error analysis To do Lab Report for Single and Double Replacement reactions : This is a formal lab report. It must be typed or written with blue or black ink. Make sure that you include the following: 1. Title 2. List of Materials 3. Safety that includes MSDS risk assessment for all the materials used ( instructions...
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...In this lab, the use of gas chromatography was used to separate a mixture of components. These components then underwent infrared spectroscopy in order to identify their identity. For this lab, the unknown mixture had the code 130-O. This unknown was identified as t-butyl alcohol and cyclopentanone. These compounds were isolated by using the GC and determining when to change vials. The determination of when to change vials came when the first peak began to level of at the bottom. This was around 1.5 according to the GC screen. A source of error in this lab comes from the lack of a GC graph. Not acquiring a print out of the curve from the GC, causes inaccurate analysis of the data. A print out would have given the precise area of each curve...
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...POINT LISAS CAMPUS Esperanza Road, Brechin Castle, Couva www.utt.edu.tt LAB 1 Decomposition reaction Aim: Determination of the number of moles of water molecules of crystallization present in hydrated Magnesium Sulphate (MgSO4.xH2O) Apparatus: Mass balance, test tube, test tube holder, heat-proof mat and bunsen burner. Reagents: Hydrated sodium carbonate. Theory: Chemical decomposition, analysis or breakdown is the separation of a chemical compound into elements or simple compounds. A more specific type of decomposition is thermal decomposition or thermolysis, which is caused by heat. ABA+B, the reaction is endothermic, since heat is required to break the chemical bonds. Most decomposition reaction require energy either in the form of heat, light or electricity. Absorption of energy causes the breaking of the bonds present in the reacting substance which decomposes to give the product. When a hydrated salt is heated it decomposes into a pure form of the salt and water. MgSO4.xH2O MgSO4 + H2O Procedure: Refer to Handout Results: A. Mass of test tube/g = 21.77 B. Mass of the tube and salt/g = 24.0 A table showing the mass of the test tube and salt after 3 consecutive heating: Heating | Mass of the test tube and salt/g | 1st | 23.96 | 2nd | 23.81 | 3rd | 23.81 | Calculations: G. Mass of anhydrous magnesium sulphate/g = F - A = 23.81 – 21.77= 2.04 H. Mass of water of crystallization evaporated/g...
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...Background Information: In this lab, the different positions of a battery powered toy car moving in one direction over time (Velocity) was measured and recorded. Time and distance were the two physical quantities measured in this lab. A stopwatch and a meter stick were used to measure the distance the toy car travelled in a specific amount of time. Once the data points were collected and plotted, the relationship between the points was found using a line of best fit, which was in the form of y=mx+b. Experimental Design: The purpose of this lab was to determine the equation relating the position to time of a moving battery powered car. The independent variable was the time (measured in seconds, with a stopwatch) throughout which the toy car travelled and the dependent variable was the how far (measured in meters, with a meter stick) the toy car travelled (its position). The toy car remained constant throughout the experiment. The hypothesis was that as the time increases, the toy car will continue to move forward at a constant velocity linearly. Methods: The lab was carried out in a fairly wide area so the car could have enough room to move and so that the lab members and other members of the classroom would not step on the toy car or trip over it, both of which could result in injuries. After a long and wide enough area was cleared to carry out the lab, team members were assigned tasks to do during the lab; these tasks included a timer, a car starter, and two people who...
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