Accuracy and precision 4 measuring & counting significant figures 5 calculations with significant figures 6 density 7 graphing density 2 1 scientific. Where d = density, m = mass and v = volume to calculate the density of the unknown liquid mass can be any unit of mass (grams, pounds, tons, etc) and volume can be any unit of volume (liters, gallons, milliliters, cubic centimeters, etc. The foundation of our location data is precise latitude and longitude ninthdecimal's platform is architected around the individual, with the ability to handle data on a level of precision and accuracy unmatched in the industry since day one. Show transcribed image text relaboratory problems experiment 4 density, accuracy, precision and graphing the solutions to the starred problems are in appendix 4 the mass of a 45750 g piece of copper is measured three times on two different balances with a the following results: trial balance ligrame) balance 2 (grams) 4576 45747 45745 4577 45748 a.
Experiment density, accuracy, precision and graphing objectives 1 the determination of the density of water 2 a comparison of the accuracy and precision of a graduated cylinder and a pipet. Precision also represents the accuracy of such meas where p is the density and m and n are presumed to be constants for a particular instrument. Experiment 4: accuracy & precision in measurement 43 where d is the density, m is the mass and v is the volume v m d consider a large rock and a small pebble. Ap physics 1 and 2 lab investigations: student guide to data analysis analyzing data to determine density or subtracting the mass of a container to determine the.
This is an easy to understand introduction to accuracy and precision we'll play guess my age, and look at bulls eyes representation of accuracy and precision category. Determine the relative precision and accuracy of different glassware items b determine the density of a solid sample by two methods • prepared graph paper. Class handouts the handouts and powerpoint presentations below are resources to be used by any/all students and educators it is appreciated if credit is given when these materials are reproduced or published in any way.
Density, an intensive (or intrinsic) property, is a kind of heaviness factor in macroscopic terms, density reflects how much mass is packed into a given three-dimensional space typically, densities are reported g/ml or g/cm 3 (which are equivalent because 1ml ≡ 1cm 3 . Experiment density, accuracy, precision and graphing objectives 1 the determination of the density of water 2 a comparison of the accuracy and precision of a. More essay examples on density rubric objectives 1 - density, accuracy, precision and graphing essay introduction the determination of the density of water 2 a comparison of the accuracy and precision of a graduated cylinder and a pipet. Graphing density: finish up the topic of density with this lab, which requires students to collect data and use graphing to determine the density values of unknown metal samples this activity will help your students learn to construct a line graph using excel and analyze a linear equation to help determine density. Gcc chm151ll: accuracy and precision of ©2013 gcc page 2 of 9 laboratory glassware: determining the density of water however, some glassware such as volumetric flasks and volumetric pipettes only have a single line to.
Density: a characteristic property be able to gauge both the accuracy and the precision (reproducibility) of your technique your graphing calculator can. Precision - how close a measurement is to _____ precision versus accuracy: look at each target and decide whether the hits are accurate, precise, both accurate. Chm115 lab 1 precision, accuracy and density review the safety policy before coming to lab you need to know all the safety rules dress appropriately bring a notebook, safety glasses and the hand-written procedure. Experiment density, accuracy, precision and graphing objectives 1 the determination of the density of water 2 a comparison of the accuracy and precision of a graduated cylinder and a pipet experimental materials part a a 50ml graduated cylinder a balance 500ml deionized water a rubber policeman part b a 100ml beaker a 50ml graduated cylinder a volumetric pipet 1200ml deionized water a.
Discovering density graph and to deteremine the relationship between these measurements the trend that is revealed the precision and accuracy of the results. Page 2 of 5 in part b of this lab, the density of aluminum will be determined using aluminum pellets again, mass will be measured using an electronic balance, in grams (g. Required techniques and concepts: mass measurement, quantitative volume transfer by pipettor, volumetric and mohr pipet, and graduated cylinder, checking calibration using the mass and density of water at a measured temperature, density, precision by significant figures and range, average, unit cancellation (dimensional analysis), graphing and. Physics: base quantities prefixes mass | force | examples: 14 consistency, accuracy and sensitivity precision 1precision is the ability of an instrument in measuring a quantity in a consistent manner with only a small relative deviation between readings.
Experiment #2 - measurements, accuracy, and precision laboratory overview chem 1361 august 2012 •work with density to determine volume from mass. Accuracy refers to how close measurements are to the true value, while precision refers to how close measurements are to each other in other words, accuracy describes the difference between the measurement and the part's actual value, while precision describes the variation you see when you measure the same part repeatedly with the same.
Demonstrate- c a lculate the density using a graph know- un derstand the difference between precision and accuracy understand- connect the concept of significant figures to precision of measuring tools. Using the density of water at the temperature recorded (available in the crc handbook of chemistry and physics) or the specific volume of water from the activity use of the analytical balance, calculate the mass of 1000 ml of water. These differences in execution can affect the accuracy, precision and trueness of results being released from the clinical or research lab to ensure pipetting accuracy, facilities should adopt standard operating procedures for pipetting techniques and ensure that all operators are trained to an adequate level of proficiency. The graph of mass vs volume places volume on the x-axis and the mass on the y-axis the value of graphing this relationship is best understood by considering the following equation #d=m/v.