Identifying an Unknown Aldehyde or Ketone Introduction The purpose of this lab is to identify an unknown aldehyde or ketone substance using chemical tests. The chemical tests used in this experiment are solubility‚ Schiff‚ Bisulfite‚ and Iodoform tests. Also‚ a 2‚4-dinitrophenylhydrazone derivative synthesis reaction will be completed from which a melting point will be obtained. The chemical test results and the melting point analysis will be compared to the table of compounds given to find the
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1. Prepare a lactase enzyme solution by dissolving one lactase enzyme tablet in 200 ml of water in a clean 250 ml beaker. Stir until the tablet has dissolved. Use labeling tape to label the beaker: “Lactase Enzyme Solution.” 2. Prepare a “denatured” enzyme solution by pouring 20 ml of your enzyme solution into a heat resistant tube. The test tube must have the words “Kimax” or “Pyrex” on it. If it does not‚ it is not heat resistant and may break! Use labeling tape to label the test tube: “Denatured
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Introduction The purpose of this lab was to explore the properties of an unknown compound. An unknown was given and a cation flame test and anion test was performed to determine the identity of the compound. Once the identity was determined‚ the properties were explored. Experimental To determine the cation of the compound‚ a cation flame test was performed. A bunsen burner was lit until a medium blue flame was burning. The given unknown was scooped onto a nichrome wire loop. The wire was held
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which organism we had in our unknown mixed culture tube by running a series of experiments to detect which specific Gram negative organism we had. To detect your gram positive from the mixed culture was given as extra credit points also. A Gram stain was performed and isolation streak plate in order to isolate and observe the unknown organism. Before the series of test‚ a dichotomous key had to be written up in order to know what steps and tests to run to identify the unknown Gram negative organism. I
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Milky Jimenez Dr. Kebichi GE150: Survey of the Sciences Unit 1 Lab 1: The scientific Method Observations: There are 22 pieces of meat and 12 pieces of sausage linked together. 4/22 pieces of meat have maggots on them they also look older/less fresh Flies are flying around and lying on the meat. Meat on tables were uncovered Questions: 1. Are flies responsible for maggot formation? 2. Why are all these pieces of meat together 3. What would happened if some of the meat were covered 4. Why does
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performed this test‚ the initially slant for unknown microorganism #17 is important. For this lab‚ two identical slants are used for two reasons. Firstly‚ the slant can be used to make sure that there is no contamination from the Nutrient Agar plate. Secondly‚ the second slant will become a stock culture to prevent the shortage of slants during performing the series of tests. Kliger’s Iron Agar tests can be used to determine multiple characteristics of unknown microorganism #17. Kliger’s Iron Agar slants
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Fundamentals of Lab reports (Students hard copy-guidance) Task Students will receive a lab manual at the beginning of the semster. This manual is expected to cover the safety‚ instruction and details of the experimental work during the lab sessions. All students should read the experiment before coming to the laboratory. The teaching assistant will discuss the safety precautions‚ experimental procedures and techniques involved in the lab session. The students should conduct the experimental
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Jennifer Hauss March 4‚ 2015 Bacterial Transformation Lab Report Introduction In this lab‚ the goal was to transform the bacteria e-coli to glow in the dark (or under a black light). Four plates were set up with agar in them for the bacteria to feed on and grow. Changes were then made to the bacteria. One plate was the control plate‚ having only the LB or agar for the bacteria and negative pGLO‚ which is the liquid not containing the plasmid. This is the plate that was compared with the three
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“COMPARING BELIEF AND THOUGHT” EUTHTHYPHO vs. SOCRATES Saint Leo University PHI 110 Professor Anthony Nattaninia A young man by the name of Euthyphro involves himself in a conversation with the well known Socrates. During this conversation Euthyphro attempts to impose unrealistic beliefs concerning piety. Euthyphro is the plaintiff in a murder suit that he is filing against his very own father. Euthyphro believes that he has a case against his father‚ the reasons the young man
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Unknown 2 Scheme “ Fair game” ions Cations: Na+‚ K+‚ NH4+ ‚ Ca2+‚ Mg(OH2)62+ ‚ Al(OH2)63+ Anions: SO42-‚ HSO4-‚ NO3-‚ OH-‚ Cl-‚ CO32-‚ HCO3- Insoluble Compounds: Ca(OH)2‚ CaSO4•2H2O‚ CaCO3‚ MgCO3‚ Mg(OH)2 I. Describe Sample a. Quick description of sample. Ex: Phase‚ color‚ odor‚ crystalline‚ amorphous‚ gel-like‚ powdery‚ etc. II. Flame Test a. Part 1 i. Orange Flame: Na+ is present. K+ ‚ NH4+ ‚ Ca2+‚ Mg(OH2)62 ‚ Al(OH2)63+ may also be present. ii. Purple Flame: K+ is present (no Na+
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