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Name: ___________________Laboratory ActivityBASIC MEASUREMENT TECHNIQUESIntroduction:The International System of Measurement (SI) is used worldwide and has been adopted as the official system of measurement by most countries. It is commonly called the metric system. Our traditional American/English system of measurement (e.g., miles, quarts, pounds) requires many conversion factors. Take length, for example – there are inches, feet, yards, and miles! The metric system is much different. It is based on standard units that can be easily converted by multiplying or dividing by factors of ten. Engineers and scientists most often use these standard metric units: the meter, for length; the gram, for mass (or weight); the liter, for volume; and the degree Celsius (or less often Kelvin) for temperature. Objective: Use common laboratory measurement devices for determining length, mass and volumes of various materials. These skills are important to learn for this and other experiments. 4737735-34036000Procedure:Part 1. Length Measurements Using the book on your lab station, measure the length, width and depth in centimeters. Record your observations below.LengthWidthDepth_______cm_______cm_______cmQuestion:Use the formula below to determine the volume of the book in cm3.Calculating Volume in cm3Volume= Length x Width x Depth_________cm3 = ______cm x _____cm x _____cm45091355842000Part 2. Temperature Measurements Determine the Celsius temperature in the laboratory by reading your thermometer. Record your observation.Temperature in the laboratory: ____________0CQuestion:Use the formula below to convert the Celsius temperature into Kelvin.Converting Celsius to KelvinKelvin = Celsius + 273_____K = _____0C + 273Part 3. Volume Measurements -5200653492500Look at this diagram of your 50 mL graduated cylinder. You will see that the surface of a liquid in a cylinder forms a curved surface. This surface is known as the meniscus. The arrow is pointing to the meniscus in the graduated cylinder. The very bottom of the meniscus is where you will take your readings. Make sure that the meniscus is at your eye level to avoid systematic errors. Follow the procedure in each box and record the measured volume.Fill a large test tube to the very top with water. Transfer the water into a 50 mL graduated cylinder and record the volume. Empty the graduated cylinder. 3709035-51054000_______mL3594735444500Fill your 50 mL beaker to the 40 mL mark with water. Pour the water into a 50 mL graduated cylinder and record the volume. Empty the graduated cylinder.______mL3709035-254000Fill your 50 mL Erlenmeyer flask to the 40 mL mark with water. Pour the water into a 50 mL graduated cylinder and record the volume. Empty the graduated cylinder______mLQuestion:Which of the following measurement devices do you think would be accurate enough to use for precise measurement of volumes: 50 mL beaker; 50 mL Erlenmeyer flask; 50 mL graduate cylinder? _____________________Explain why.____________________________________________________________________________________________________________3937635254000Part 4. Mass Measurements You will be using digital top-loading balances in this laboratory. Record the mass of the following items:Test-Tube________gramsBeaker________gramsErlenmeyer Flask________gramsGraduated Cylinder________gramsYour Choice:________________________________gramsSummary Questions:What system of measurement was used in this laboratory activity?____________________________Convert 550C to Kelvin (include formula and mathematical calculation).Define meniscus.____________________________________________________________________________________________________What place (tenth, hundredth, or thousandth) does the digital scale measure to?__________________________ ................
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