Carbamide peroxide Essays

Carbamide Peroxide Carbamide peroxide is a commonly used oxidizing agent that is present in a large number of teeth whitening products. The Carbamide peroxide is greatly recommended by most of the dentists all over the world because of its effective whitening formula. In fact, it is a key ingredient in most of the professional dental teeth whiteners in-office and also in some of the at-home whitening treatments. What is Carbamide Peroxide: In the pure form carbamide peroxide is white in color and

reaction will be faster The more heated the liver is the longer it will take the reaction to take place than if the liver is cold or at room temperature, MATERIALS 8 test tubes Safety goggles Test tube rack Water Ice Bunsen burner Liver Hydrogen Peroxide (H2O2) Hydrochloric acid (HCL) Sodium Hydroxide (NaOH) Liver(cut into small pieces) Test tube holder 2 beakers Pipette Stirring rods Paper Towels Beaker stand Method Gather all the material and put on the safety goggles. Place a 1 piece of liver

Model that we built called structured model, because it mimic the chemical recation in biological system. All quantities and calculation also solved by SimBiology as well, so our focused is only built sturcutred model that approach reality. Structured model also offers control about reaction rate in simulation biosystem, so it can be predicted what reaction that bikin lambat pembentukan produk atau mempercepat pembentukan produk.. As many reaction that occur in the cell, we also choose wisely what

hydrogen peroxide which is a byproduct in many cellular reactions. In this lab, we will use a catalase solution from yeast and determine the effect of substrate concentration on the action of this enzyme. The substrate of the enzyme will be different concentrations of hydrogen peroxide (H2O2). Catalase works by the following mechanism : 2 H2O2 ------------------> 2 H2O+ O2 Hypothesis: The hypothesis for this experiment is that the foam of O2 produced from the reaction between hydrogen peroxide and catalase

decomposition of hydrogen peroxide Research question: How will varying the concentration of hydrogen peroxide affect the rate of reaction measured by collecting the amount of oxygen produced figure 1 shows how catalyst provide alternate pathways Background: For my internal assessment I will be investigating the catalytic decomposition of hydrogen peroxide using manganese(IV)oxide( MnO2 ) as a catalyst. I will be testing how varying concentrations of hydrogen peroxide will affect its decomposition

Procedure The aim of this experiment was to determine how variations in the amounts of calcium carbonate would affect the amount of carbon dioxide produced within the time frame of one minute. By measuring the amount of carbon dioxide produced, the changes in the rate of reaction could also be determined. By the end of the minute, the more carbon dioxide was produced, the faster the rate of reaction. Throughout the minute, the flask containing hydrochloric acid and calcium carbonate was swirled around

The sun rose on a beautiful fall morning. Chalupa Batman began to tend to his crops, but before he did that, he decided to munch on some bittersweet, chewy candy known as ‘Sour Patch Kids’ for breakfast. As he left his house to tend to his crops, he came across a vile, roadkill-like, smell. He decided to follow the smell to determine the object responsible for the disgusting smell that met him at his front door. He noticed a small black creature with a white stripe down its back sitting in front

1. What temperature will have the fastest reaction if a catalase enzyme and hydrogen peroxide are mixed together? 2. If catalase enzymes and hydrogen peroxide are mixed together, then the fastest reaction will occur when the test tube is placed in a 30 degrees C water bath because that is the temperature when and hydrogen peroxide react the fastest. 3. Amount of catalase enzyme added b. 0.5 cm3 c. cm3 d. 10 cm3 test tubes. The catalase enzyme was added to each test tube, so the reaction was possible

The method used was reliable and increased accuracy in the experiment, making it a fair test. This is proven throughout out the experiment because of many reasons such as the controlling the temperature. We did this by making sure the temperature of all enzymes tested, were consistent and had the same temperature, by putting the potato enzymes (Peroxidase) in a boiling tube then in a water bath to at a temperature of 20*c. This ensured a greater accuracy in the results, because if the temperature

given environment. Hydrogen peroxide was introduced and given a set amount of time to react. The volume of hydrogen peroxide was measured to five milliliters before being introduced into the reaction to better find reaction rates. An enzyme acts as a catalysis to increase the rate of chemical reactions. The activation energy required is lowered by the use of an enzyme. Substrate is used as a reactant with the enzymes. In this lab, the substrate was hydrogen peroxide. They also play a role in breaking

effects of Hydrogen Peroxide coming into contact with a catalase solution, in this experiment it was Calf Liver. As a result of the contact, oxygen gas was formed. Therefore, the collected data suggested the rate of reaction of the catalyse increases as the volume of Hydrogen Peroxide increases. This can be seen through the linear trend line that moves up in a positive direction, which shows that the relationship between the rate of reaction and the volume of hydrogen peroxide is positive. However

Abstract To figure out how temperature effects the change in the rate of an enzyme, test tubes were filled with solutions of buffer with a pH of 5, peroxidase, H2O2, and guaiacol and placed different water baths of the following temperatures: 4°C, room temperature (23°C), 32°C, and 60°C. To help determine the rate of reaction of peroxidase, a spectrophotometer was used to measure the absorbances of the solution. There was also a recovery portion to check the functionality of the enzyme after being

composition of hydrogen peroxide by analyzing the hydrogen peroxide through an oxidation-reduction reaction. A buret was filled with 0.025 M of potassium permanganate and zeroed. Exactly 1 mL of hydrogen peroxide was poured into an erlenmeyer flask using a pipet and diluted with 25 mL of deionized water and then 5 mL of 6 M sulfuric acid was added as well. The purpose of including the sulfuric acid is to catalyze the reaction between potassium permanganate and hydrogen peroxide. The solution was then

the effect of adding hydrochloric acid (HCl) to the reaction between hydrogen peroxide (H2O2) and the enzyme catalase, which is and enzyme found in liver (NOAA Office of Response and Restoration). Our group first hypothesized that if 2 milliliters (mL) of hydrochloric acid was added to a mixture of 2 mL of liver extract and 2 mL of hydrogen peroxide, then the acid would intensify the reaction between the hydrogen peroxide and the catalase and cause increased bubbling. Hydrochloric acid is strong and

Lucas Wang 1. Title: Amount of Elephant Toothpaste Created With Different Amounts of Hydrogen Peroxide. Important: H.P. = Hydrogen Peroxide; P.I. = Potassium Iodide 2. Introduction - The Question: How does adding more or less hydrogen peroxide to potassium iodide and dish soap affect the amount of foam produced? The world of chemical reactions is none less than an absolutely fascinating one. There are many experiments or tests you can perform to explore this intriguing topic. A chemical reaction

enzyme. These include, but are not limited to different pH levels, changes in temperature, amount of inhibitor, and amount of salt. In the reaction done in the experiment, the enzyme is known as peroxidase and the substrate is known as hydrogen peroxide (H2O2). In every reaction, there are constants such as the buffer

In this multi-step experiment, there were multiple hypotheses which were stated. The first hypothesis was that if an enzyme catalase is added to Hydrogen Peroxide, then the temperature of the H2O2 will increase. The other two pertained to an enzyme being affected. If boiled catalase is mixed with Hydrogen Peroxide, then there will be a larger temperature jump than if only pure catalase was added. The third hypothesis was if catalase with acid is added to H2O2, then the temperature will have a smaller

filtered through a coffee filter. Nine test tubes were prepared in order to perform this dye coupled reaction. One contained 5.0ml of the potato and pH buffer mixture, 2.0 ml of hydrogen peroxide, and 1.0 of guaiacol to serve as a blank for the spectrophotometer. Four test tubes were filled with 2.0 ml of hydrogen peroxide and 1.0 ml of guaiacol, used for measurement by the spectrophotometer, each. The last four were filled with 4.0 ml of the potato and pH buffer mixture and 1.0 ml of peroxidase. Each

Abstract In this experiment it was examined whether the enzyme peroxidase will work fastest in a pH of 8.0. We placed the enzyme peroxidase in a reaction with guaiacol and hydrogen peroxide in four different pH solutions. Then recorded the absorbencies for each reaction until all substrates were used up, and calculated the initial reaction velocities for each. We found that the reaction in a pH 7.0 solution had the highest initial reaction velocity. Over-all this study shows that the enzyme peroxidase

per unit time). In order to do so, enzymes bind temporarily to one or more reactants, lowering the amount of activation energy needed and thus speed up the reaction. Most of the cells use an enzyme called catalase to reduce the amount of hydrogen peroxide, a toxic substance that could accumulate as a result of normal cell activity. The purpose of this experiment was to observe the effects that enzyme concentration and copper (II) sulphate would have on the rate of reaction. This experiment was divided