Lab Techniques & Measurements Pre Lab Questions: (4pts) 1. What will you learn after completing the lab? -The experiment will introduce different level of precision and measuring to the appropriate decimal place and will be familiar with measurements and weight. 2. Write the symbols and equation used to make a dilute solution from concentrated or stock solution. - The concentration of substance is described as molarity and this can be expressed as – Molarity
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ColleGe Chemistry LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 a laboratory manual of small-scale experiments for the independent study of General College Chemistry 50-0125-CK-01 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on experiences. The laboratory manual included with a LabPaq is intended for
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mass‚ length‚ volume‚ temperature‚ and density 2. Learning to identify and use tools provided within the labpaq kit 3. Becoming familiar with common lab tools used in Chemistry Observations: While participating in experiment 1‚ I was able to become familiar with my new lab kit. I observed how to weigh and measure objects as well as record those findings in an organized graph. Throughout the lab I was able to measure using a ruler‚ all the way to measuring volume. Data Table 1 – Length Measurements
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common measuring devices used in a chemistry laboratory. • Determine the volume‚ mass‚ length‚ temperature‚ and density of objects and liquids. Materials Materials Label or Box/Bag Qty Item Description Student provides 1 1 1 1 1 1 1 1 1 Metric ruler‚ cm (centimeter) & mm(millimeter) Table salt Small number of ice cubes Piece of string Flame source Isopropyl (rubbing) alcohol Tap water Distilled water‚ 25 mL Paper‚ 5 cm x 5 cm for weighing chemicals LabPaq provides
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opportunity to measure the energy in a variety of foods‚ by heating/burning a portion of the food item and catching the heat released into a known mass of water in a calorimeter. We will also identify units of measuring heat such as calories and joules. We will use basic lab equipment provided in our labpaq and we will use several household items as well. We will follow all safety requirements and standard procedures for this lab. We learned from the chapter that a “calorie: is a unit of energy‚ just
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| | | |3 |Drinking glasses‚ small | | | |1 |Measuring cup‚ 1 cup | | | |1 |Paper towels | | |
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Materials Student Provides: Distilled Water 2 Clean Sheets of Paper 1 Paper Towel 1 Pair of Scissors LabPaq Provides: 1 Digital Scale 1 50 mL Plastic Graduated Cylinder 1 Pair of Safety Goggles 1 Spatula 6 Test Tubes‚ 13 x 100 mm in Bubble Bag 1 Test Tube Rack‚ 6 x 13 mm 1 Dual Magnifier 1 Rubber Stopper 1 Marking Pencil 1 Test Tube
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Department of Chemistry Physical and Chemical Properties Submitted by: Date Submitted: 2/2/2014 Date Performed: 1 Lab Section: Course Instructor: PURPOSE: To identify chemical and physical change in matter. PROCEDURE: Finding out the physical and chemical change in matter. There was seven different substances that were being tested; Mossy Zinc (Zn)‚ Magnesium (Mn)‚ Copper (Cu)‚ Magnesium Oxide (MgO)‚ Copper II Nitrate (Cu(NO3)2)‚ Copper II Carbonate (CuCO3) and Sodium Chloride
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Biology LabPaq / Published by: Hands-On Labs‚ Inc. sales@HOLscience.com / www.HOLscience.com / Toll Free 866.206.0773 A laboratory Manual of Small-Scale Experiments for the independent Study of general Biology 50-0053-BK-02 LabPaq® is a registered trademark of Hands-On Labs‚ Inc. (HOL). The LabPaq referenced in this manual is produced by Hands-On Labs‚ Inc. which holds and reserves all copyrights on experiences. The laboratory manual included with a LabPaq is intended for the sole use
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determine the actual yield vs. the theoretical yield and to calculate the percent yield. A Precipitation reaction begins by combining two aqueous solutions to form a precipitate‚ an insoluble product that is also a solid. With my knowledge of the measuring scale‚ I was able to use the scale with no problem throughout the whole experiment. The mass of the weighing dish was 0.5 grams. Initially it was calculated that 0.68 g of CaCO3 was needed for a full reaction. The net mass of Na2CO3 (reactant)
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