Carbamide peroxide

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  • Whitening Toothpaste Research

    with time, cannot be avoided, extrinsic discoloration, discoloration from drinks, smoke, or medication can. Drinks such as coffee and red wine can noticeable yellow teeth (Barlow, 2012). Smoking cigarettes can also discolor teeth. But one of the most uncommon products to discolor teeth is medicine. “Certain medications, notably tetracycline, also discolor teeth says Gennaro Cataldo a Henry M. Goldman School of Dental Medicine professor of general dentistry” (Barlow, 2012). In order to whiten teeth, the chemicals carbamide peroxide and hydrogen peroxide should be used (Kugel, 2008). Other essential whitening chemicals are Polyvinyl pyrrolidone, abrasives, detergents, carbamide peroxide, sodium tripolyphosphate, citric acid, papain and triclosan (Won, 2007). According to the American Dental Association, two ways to whiten teeth are to remove surface stains or to remove deep stains (, 2012). Removing deep stains usually consists of whitening products with peroxide in them. On the other hand, non-bleaching products include chemicals that only remove surface stains (, 2012). In contrast, Alan Carr states that Blue covarine, a chemical contained in some toothpastes, creates an optical illusion so it seems that your teeth have a whiter pigmentation. Carr also says, when blue covarine is contained in a toothpaste, it immediately whitens teeth (Carr, 2014). Alan Carr says, “ To remove surface stains, whitening toothpaste typically include special abrasives that…

    Words: 1072 - Pages: 5
  • Catalase Experiment

    According to PubChem (2015), hydrogen peroxide (34.01468 g/mol) consists of two hydrogen atoms and two oxygen atoms that can be seen in liquid and powder form. The liquid form is visible to the human eye as a colorless liquid with a clear odor that could be described as irritating or distinct. The aqueous molecule can be broken apart fairly easily, as it is a very unstable molecule with a bent shape. When coming in contact with certain organisms’ tissues and organs, H2O2 is broken down by…

    Words: 881 - Pages: 4
  • Hydrogen Peroxide Decomposition Lab

    Hydrogen Peroxide Decomposition Lab Report Objective: By utilising the catalyst of potassium iodide to trigger a decomposition reaction in hydrogen peroxide, how will fluctuation in temperatures will affect the decomposition rate? Hypothesis: Due to the decomposition effect of potassium iodide on hydrogen peroxide, the increased temperature applied will also increase the decomposition rate, because of the more occurrences of collisions which causes the more energy to be produced. Independent…

    Words: 961 - Pages: 4
  • Working Collaboratively

    Appendix 1: Working Individually and Collaboratively During this practical I have had to work collaboratively with my partner during the experiment and individually while writing this practical report. While conducting the investigation, I had to work with my partner in a safe and considerable manner to allow the experiment to be completed safely. The person that I was collaborating with poured the hydrogen peroxide solution into the measuring cylinder with the liver it and marked the froth…

    Words: 711 - Pages: 3
  • Peroxisomes

    important role into the cell as far development goes. Many of the organelles operate off of other to maintain its specific duties with the human body. One in particular are considered to be peroxisomes. Peroxisomes have digestive enzymes in relations to lysosomes, but they have special bodies that allow it to work in low level regions in which wouldn’t be supported elsewhere inside of the specific cell. Peroxisomes break down chains of long fatty acids, amino acids, etc. that are vital for the…

    Words: 516 - Pages: 3
  • Synthesis Of Pb Film

    In this study, multiwalled carbon nanotubes@poly(p-phenylenediamine)-prussian blue (MWCNTs@PpPD-PB) nanocomposites were synthesized and used for the nonenzymatic electrochemical detection of hydrogen peroxide (H2O2). The PpPD layer also helps the MWCNTs to be dispersed in the water together with the PB formation and fixing on the surface of the MWCNTs. Moreover, PpPD, a conductive polymer, increases the electronic conductivity and stability of MWCNTs. By combining the selectivity and catalytic…

    Words: 768 - Pages: 4
  • Enzyme Lab Report

    Use a dropper to add 1mL of the 30% hydrogen peroxide solution and 5ml of distilled water into the second test tube to create 6mL of 5% hydrogen peroxide solution. 9. Use the dropper to drop 1mL of the 5% hydrogen peroxide solution from the second graduated cylinder into the second test tube. Use the stopwatch to record the time for the height of the bubbles to reach maximum height. Observe and record any evidence of a chemical reaction. 10. Cut and measure 0.5g of pig liver on the digital…

    Words: 1361 - Pages: 5
  • Health Benefits Of Catalase

    In addition to acting as a super antioxidant, catalase also has the ability to use hydrogen peroxide to oxidize toxins including methanol, ethanol, formic acid, formaldehyde, and nitrite. This type of dual activity makes it a crucial cellular enzyme. The Health Benefits of Catalase 1. Powerful Antioxidant Support Catalases are perhaps the single most efficient enzymes found in the cells of the human body. Catalase has been shown to create a speedy reaction against hydrogen peroxide free…

    Words: 1087 - Pages: 5
  • Biodegradation By Fenton Reaction Lab Report

    representative phenol compounds: phenol, 2-chloro- and 2-nitrophenol. The batch experiments were carried out with the phenol solution in the absence of light, unbuffered solutions, varying the doses of hydrogen peroxide from 0.2 to 3.5mM per 1 mM of phenolic compound. The initial concentrations of phenol compounds were 2.66 mM phenol, 1.95mM 2-chlorophenol and 1.8 mM 2- nitrophenol. The molar ratio of [ferrous ion: phenolic contaminant] was kept at 0.01:1. And, for the anions, 20mM of NaCl and…

    Words: 826 - Pages: 4
  • Elephant Toothpaste Experiment

    Hydrogen Peroxide makes it shoot up into the sky. Most of the time when you use really scalding water you will not be able to touch it or it will literally burn the individual’s flesh off their hand. Many people have tried to touch this and has either got lucky or had to be rushed to the emergency room. Theses procedures must be followed precisely you will only need a cup of hydrogen peroxide a smaller amount will not activate this experiment and to too much will have you cleaning up the science…

    Words: 728 - Pages: 3
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