Performed: June 13‚ 2010 Lab Section: Chem-181 DL Course Instructor: Purpose In this lab‚ I will be investigating some physical and chemical properties of gases and using these properties to identify these gases when they are encountered. * Procedure 1. Hydrogen * a. Place a small piece of Zn (mossy zinc) metal into the test tube containing the diluted HCI. * b. Take the test tube and cap it with
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Bunsen Burner B. Show to handle liquids and solids in lab. C. Basic safety and Electric balance. D. To show knowledge of being able to find volume of a liquid. II. Equipment. A. Bunsen Burner B. Rubber Hose C. Striker D. Electric Balance E. Crucible Tongs F. Piece of paper G. Gas and Knob H. Copper Wire I. 2.75g of Sugar J. Test Tube K. Graduated Cylinder L. Water III. Procedure • Put on Safety Goggles. • Bunsen Burner Lab o Attach Rubber hose to gas line o Turn Gold knob counter
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observe a variety of chemical reactions and to identify patterns in the conversion of reactants into products. Apparatus: • Bunsen or lab burner -Test tube clamp • Butane safety lighter - Test tube rack • Evaporating dish - Wash bottle • Forceps or crucible tongs - Wood Splints • Heat resistant pad • Litmus paper • Pipets • Spatula • Test tubes Materials: Ammonium carbonate‚ 0.5g Calcium carbonate‚ 0.5g Copper chloride solution‚ 4mL Hydrochloric acid‚
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Abby Goldschmidt Honors Biology 2° Mrs. Gempel September 3‚ 2015 Daphnia Lab Results Paper Abstract The goal of the study was to observe the effects of multiple chemicals on a Daphnia magna’s heart-rate compared to a control (pond water). The different chemicals were caffeine and alcohol. The heart-rate was the main variable in this experiment. The Daphnia’s heart-rate was observed for 15 seconds and then multiplied by 4 to show its heart-rate in one minute. This was repeated 4 times for each
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in the hydrogen peroxide solution. Table 1 Test Tube Contents with 5 cm3 hydrogen peroxide Observations before and after using wood splint Observation of after Observation of after adding hydrogen using wooden glowing peroxide splinter 1 Fresh liver Moderate amount of effervescence is produced . Pop sound is heard . The glowing splinter is ignited with violent flame and extinguished within 8 second as the glowing splinter
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If the substance was the same as the positive control than the substance is positive. In the first lab we did the Paper Spot test‚ one would have had to apply the substance on a cardboard like paper. If it looked oily it was the biomolecule called lipid. The result of test one was it stayed the same‚ it did not turn oily and was clear. Next was the test called Biuret test‚ this was to test if it was a protein. If it was a positive control it would break down into 2 colors of maroon-brownish.
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PSBPP103 Differential Gram’s staining EXPERIMENT NO. 1 AIM: THEORY: Page No: C1 Date: To Gram stain the given bacterial suspension and to differentiate between gram positive and gram negative organism. Visualization of microorganisms in the living state is very difficult‚ not just because they are minute‚ but because they are transparent and almost colorless when suspended in an aqueous medium. To study their properties and divide microorganisms into specific groups for diagnostic purposes
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1 ECE 402 TEST 2 SUMMER 2009 July 23‚ 2009 NAME: INSTRUCTIONS: Please Read If you need more room‚ write on the back side of the PREVIOUS page‚ not the back of the current page!! Please do not use your paper. Open book(s) and notes‚ including any lab related material. Cell phones off and out of sight. Be sure what you have written down is correct. YOU COULD LOSE POINTS FOR INCORRECT STATEMENTS. There are 6 problems on 4 total pages‚ including this page‚ make sure you have all pages now. The tests
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AP BIOLOGY Lab 5 Cellular Respiration Objective: To calculate the rate of CR from the data. To then relate gas production to respiration rate. Then test the rate of CR in germinating versus non-germinating seeds in a controlled experiment and then test the effect of temperature on the rate of CR in the germinating versus non-germinated seeds in a controlled experiment. Analysis: 1. The CR is higher in the germinating peas in the cold water rather than in the beads or non-germinating peas
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imply the non-stationarity of the linear combinations of these series. Hence‚ it is a prerequisite to ensure that all variables are integrated of order one in levels before employing the panel cointegration tests. Table 3 presents the results performed by Im‚ Pesaran and Shin unit root test of all variables for the four panels of economies tested in both levels and in first difference. Panel A‚ B‚ C and D represents all income economies‚ high-income economies‚ upper-middle-income economies and
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