# Laboratory Techniques and Measurement

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Name General Chemistry 1411 Laboratory Techniques and Measurements May 16, 2013 Professor Frank Pishva Objective/Purpose: The objective of this lab, laboratory techniques and measurements is for us the student to learn about the unit systems and how it relates to measurements in mass, length, temperature, and volume. This lab purpose is to also help us learn how to combine units to determine density, conversions, and trying to become familiar with common laboratory equipment and techniques. Hypothesis/Theory: This lab is pretty self-explanatory. The only theory that could possibly occur is on data table 9, understanding the dilution process. As the dissolved sugar volume transfer increased, the mass will stay approximately the same due to the density of the water decreasing as the sugar water become less diluted. Experiment: This lab consisted of three different exercises which included length, temperature, and mass measurement; volume, density and concentration; concentration, solution, and dilution. For the first exercise, I gathered a few objects including a ruler, cd, key, spoon and fork, measured in centimeters (cm), then in millimeters (mm). In order for me to convert millimeters into meters (m), I used dimensional analysis. I then measured hot tap water versus boiling water, and then cold tap water versus water with ice, and recorded the temperature that was read on the thermometer, and then converted the temperature from Celsius (C), to Fahrenheit (F), and Kelvin (K). To understand how to measure mass, the lab required the following material: pen or pencil, 5 pennies, 3 quarters, 4 dimes and a key. Then I used the digital scale to measure the following objects to obtain its mass and recorded the data. For exercise 2, volume, density and concentration, I started off measuring the graduated cylinder to get its mass. From that mass, I was