-Unknown Mixtures Lab- Purpose: The aim of this experiment was to find out the two substances of the unknown mixture from salt‚ sugar‚ dirt‚ and baking soda by looking at its properties. Hypothesis: Find the unknown substance by testing it out by heating it‚ pouring water‚ vinegar‚ and observing it . Procedure: 1) Materials- * 100ml of water * Vinegar * Bunsen Burner * 2 beakers * 1 spatula 2) First‚ do steps (3-6)to find out the properties of salt‚ sugar
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disinfectant to sterilise your lab work surface‚ this will prevent contamination but leave the disinfectant to stand up to 4 minutes so it can penetrate the harder capsules of some bacteria. 4. Using a sterile pipette with draw some of your bacteria culture from the bottle making sure you flame the neck of the bottle to keep the procedure sterile. Place what you have withdrawn on to an agar plate. 5. then get your glass sterile spreader out of the packet making sure you only touch the handle and with the spreader
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Joanne Twohey Outcome 5 - School Policies and Procedures Every school and business must have policies and procedures in place. A school ’s policies and procedures are adopted from laws passed by the Government. These are in place to ensure the school is run correctly‚ and that staff‚ pupils‚ and any other individuals involved with the school are protected and meeting expectations and guidelines. There are usually a large number of policies in place within a school. These can include policies
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Who or What Identifies You? I‚ myself‚ don’t really know who or what identifies me. I am still at the process of finding out who I really am. I am at a constant struggle with the different personalities that I show whenever I socialize with various groups that I am a part of. “Nothing is permanent” just like what Charlie Chaplin said. I can easily change my personality. With the fact that I can adapt to different social groups‚ I am lost with nothing to hold on to. Lost in the world that I made
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genus of bacteria. Several biochemical tests will be performed to aid in the identification of this unknown bacterium. Biochemical tests are a series of tests used to identify certain bacterium The various tests that are used in this lab are the catalase test‚ oxidase test‚ blood hemolytic test‚ MSA‚ blood agar‚ and PEA/ab sens test. A known Gram positive coccus bacteria will be used alongside an isolated Gram positive unknown bacteria for comparison to aid in the ability to identify the isolated
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The identification of an unknown bacterial environmental isolate through a series of morphological‚ physiological and differential exercises. The purpose of the environmental isolate report is to learn what is necessary in order to take an unknown environmental isolate (EI) and identify it. This was achieved through a series of exercises that provided information on the morphological‚ physiological and biochemical traits of the EI which were then compiled and interpreted in order to make a presumptive
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Effectiveness of Garlic in Fighting Bacteria Introduction This experiment determined whether garlic was effective in fighting bacteria. This project interested me because garlic is traditionally used in medicine and is known to combat bacteria. Hypothesis If bacteria is exposed to garlic‚ then the garlic will to abolish the Escherichia coli‚ because the Escherichia coli (E. coli) is usually a weak bacteria. Procedure Have three petri dishes prepared with blood agar‚ and three test tubes
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PROCEDURE 1) A standard was prepared in solvent and was placed into sample holder for the purpose of calibration curve. 2) The liquid sample was also prepared in a similar manner and placed into sample holder. 3) The UVProbe Software was opened and the method(M) was set to wavelength of 800-0.0 at medium speed for measuring liquid sample absorbance ‚ and the method was saved in a file according to sample name. 4) The standard for baseline measurement was run. (The first run using an empty cuvette
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Purpose: I will identify an unknown liquid by obtaining an average density & boiling point for my liquid and comparing them with the known densities & boiling points of liquids in the CRC handbook of Chemistry & Physics. I will perform these experiments using three different measuring tools (graduated cylinder‚ burette & pipette) to evaluate the precision of each one. Results: Density 1‚ 2 & 3 calculated by using graduated cylinder to obtain volume. Density 4‚ 5 & 6 calculated by using volumetric
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However‚ the original manufacturer‚ Kaufmann Ltd.‚ has gone out of business‚ and specifications for the part are unavailable. The purpose of this experiment‚ performed by Ryan Nelson‚ Peter Glascor‚ Eric Flowr was to determine the identity of the unknown polymer by comparing its properties to properties of other known polymers. Most likely‚ the part is one of the five following polymers: polyethylene‚ polypropylene‚ polystyrene‚ polycarbonate‚ poly(vinyl chloride). These are all extremely common
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