Bunsen burner

Question: How much bacteria will be found in each pedicure spa? Hypothesis: If I swab multiple pedicure spas using a test kit, streak plating, and colony morphology, then I will find the presence of bacteria is unsafe because cleaning practices are not followed properly. Procedures Determine the five pedicure spas in which you will obtain samples from Give each pedicure spa an anonymous name (Ex: Spa A, Spa B, Spa C) Type up an approval letter stating what you will be doing and what it is for…

Lab Five: Microscope and Simple Staining Introduction A microscope is a tool to examine enlarges image of small objects that are hard to study with the naked eyes. The light microscope, which was used in this lab experiment, is an instrument with two lenses and various knobs to focus the image. We will learn about the proper way to use and handle the microscope. Microorganisms are measured with an ocular micrometer, which is inserted into one of the microscope eyepiece. Micrometer serves as a…

The solubility test involved usage of a 40mL beaker and stir rod. Mixed 0.15g of the unknown chemical into 10mL of deionized water and recorded if the compound is soluble. The flame test used a Bunsen burner and nichrome wire. Using the solution created from solubility test, dip the nichrome wire into the solution and hold over the flame. Recorded any change in the flames color. Testing for the cation ammonium used two 10mL graduated cylinders and…

clamp, was fastened to a ring standard to be heated by the Bunsen Burner. A one hole rubber stopper fitted with a glass tube was fitted into the top of the test tube. A measurement of 5 ml of the Limewater was placed into a graduated cylinder. With test tube holders, a separate test tube was held over the end of the glass tubing to collect the gas produced. The Copper(II)Carbonate was heated until it completely changed its color. The Bunsen Burner was turned off and the Limewater was immediately…

Introduction Gram staining is a method commonly used to determine the chemical make up of the cell wall of bacteria. The cell wall can stain either positive or negative, depending on its chemistry.The aim of this experiment. Gram staining was the first differential technique used and still in use to make microscopic vision of bacteria clearer while also sub-divides the bacteria into two major groups: Gram-positive and Gram –negative. This experiment should help us describe how Gram staining…

The book, The Disappearing Spoon by Sam Kean explores each of the elements on the periodic table. The Disappearing Spoon focusses on the history of the Periodic Table by telling stories that show how each element affected the scientists that discovered it. For each element, Kean supplies an extensive backstory for its foundation, the common (or uncommon) uses of the element and other useful factoids about the matter. The author begins the novel with a physical description of the Periodic Table…

Research Question: What is the effect of the properties of a mixture on the methods of separation and the mass of each substance that is obtained after separation? Background Research: What is a mixture: The reason for the chosen methods: Water is able to dissolve salt because the water molecules (H2O) attracts the sodium(Na) and chloride(Cl-) ions. Hypothesis: If we use a magnet to separate the iron from the mixture we will only extract the iron from the mixture because nothing else in…

and stored at a 24°C incubator after 24-48 hours of initial growth. After transfer is completed, student can begin working on their first step of biochemical testing. The first procedure in the biochemical tests of enteric bacteria was to use a bunsen burner to sterilize the inoculation loop then streak unknown bacteria on to the MAC agar plate using streak plate technique referred from the lab manual in exercise 7. The MAC agar plate was then stored in the incubator at 37°C for about 48 hours…

a dark blue color. The chemical equation : (aq) + 2NaOH (aq) --> (s) + (aq) Net ionic equation is (aq) + 2OH- (aq) --> (s) Preparation of CuO In this second reaction , we use a Bunsen burner , to heat up between and . The observation I noticed here was how during the heating process , we could see the colour of the solution was changing from blue to black slowly. Not only that , but black precipitate settling at the…

working class and is one of the many animal references deliberately integrated into the film to appeal to an Elizabethan audience. A direct example of overt masculinity in 10 Things I hate about you occurred when Patrick moved his hand through a bunsen burner flame to intimidate Cameron and Michael expressing his masculinity. There were many occasions of feminist views in Taming of the…