Report Submitted: September 4‚ 2013 Title: Observations of Chemical Changes Purpose: To observe some properties of chemical reactions and to associate chemical properties with household products. Procedure: In this experiment I used a 96-well plate to hold each of the chemical reactions that occurred during this lab. Using a pipet‚ I added two drops of one chemical with two drops of another chemical and observed the effects of each reaction. Data Table 1: Experimental Data Well # |
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_2___mL Step 6: Density Measurements Part A Mass of empty graduated cylinder _16.9_g Mass of graduated cylinder and water 21.1_g Net mass of the water __4.2_g Density of the water _0.84_ g/mL Part B Mass of graduated cylinder and alcohol _20.4_g Net mass of the alcohol __3.5_g Density of the alcohol __0.7__ g/mL Part C Mass of graduated cylinder and salt solution ____g Net mass of the salt solution ____g Density of the salt solution
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students and principles for accurate measurement were tackled to educate the individuals on how to get measurements with the least percentage of error with uncertainties. 1. Introduction Throughout history‚ man has made and used various tools for measuring. It evolved from using their body parts to using daily objects then in formulating specific tools for measurement. Along with these innovations came the credibility of each measurement. It was then called to as measurement uncertainties. In the later
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In finding the density of a Coke Can‚ I used two different methods; the overflow can method‚ and the measuring method. The procedures varied in the way I found the volume‚ for I found the mass with a scale in both procedures. In procedure B I measured the volume of a coke can with a ruler‚ however I measured how much water dripped out of the overflow can to find the volume in method A. Each came out with different results‚ but both led me to a similar conclusion. The measuring method came out with
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9/22/13 I: Design Title: The Mass of Quartz Purpose: To determine the density slope for water and alcohol and apply the understanding to determine the volume of a quartz sample without measuring the volume or calculating it. Hypothesis: The hypothesis of this lab was by using the density of alcohol we could calculate the density of a quartz samples. Controls and Variables: Independent variable: Volume of water and alcohol Dependent variable: The weight of the liquid or solid Controls:
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Mini-Lab Report Objectives: There were two major goals of the “Observing Bacteria and Blood” experiment. The first was to establish a familiarity with the proper techniques for using a microscope. The experiment focused on both the basic components of a microscope (i.e. how to adjust the knobs and levers for the desired result) as well as how do decide the proper objective to use for observing a specimen. The second goal major goal of this experiment was to practice observing live specimens
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The purpose of this experiment was to acquaint the students with basic laboratory procedures‚ methods‚ and techniques; to introduce the use of basic laboratory measuring devices; to demonstrate different methods of manipulation of numerical quantities. DENSITY AND SPECIFIC GRAVITY Materials and Methods Part 1: Density of an Unknown Solid 1. We first were asked from our laboratory instructor to attain an unknown solid and were asked to note down the number of the solid. 2. Determine
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Experiment 2: Measurement of equivalent radius‚ bulk density and solid density of granular materials. Objective: To measure the equivalent radius‚ bulk density and solid density of granular materials. Materials: Red beans‚ green beans and ground nuts. Apparatus: 100mL measuring cylinder‚ 50mL measuring cylinder‚ analytical balance and cooking oil. Procedure: Results: Table 2.1: Data of equivalent radius‚ solid density‚ bulk density and porosity of granular materials. nj Red beans Green
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test tube __16__mL Number of drops in 1 mL ___21_drops Volume of the micro pipet __99__ drops _4___mL Density Measurements Mass of graduated cylinder 16.5____g Mass of graduated cylinder and water _20.5___g Net mass of the water __4__g Density of the water __.8__ g/mL Mass of graduated cylinder and alcohol _20.45___g Net mass of the alcohol __3.95__g Density of the alcohol __.79__ g/mL Volume of half filled graduated cylinder _30.1___mL Volume of half filled graduated
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Measurement Devices Objectives: • To know how to use the different measuring devices properly. • To know how to solve the volume. • To know how to solve the Density. Introduction: "Accurate measurement is essential" – Measurement is the size‚ length‚ or amount of something‚ as established by measuring. Measurement is the first step that leads to control and eventually to improvement. If you can’t measure something‚ you can’t understand it. If you can’t understand it‚ you can’t control it. If
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