A Chemical Reaction Lab

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Percent Yield in a Chemical Reaction In this lab, the purpose was to find the theoretical yield of sodium chloride produced by the reaction of hydrochloric acid and sodium hydrogen carbonate. Based off of our results, we had to find our percent yield of sodium chloride. First, the mass of a clean, dry evaporating dish and watch glass was taken, with the watch glass underneath the evaporating dish. Next, two grams of sodium hydrogen carbonate were added, and the mass of that was taken. Then, 10 mL of hydrochloric acid was added to the sodium hydrogen carbonate, and was stirred, with extra drops of hydrochloric acid added until bubbling stopped. After that, the watch glass was placed on top of the evaporating dish, and then placed on wire gauze.

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Chemical Reaction Lab

this experiment we looked at how heat increases the rate of most chemical reactions. During reactions, faster molecular motion caused by heat increases the probability that molecules will contact substrate. However, higher temperatures could alter the conformation of an enzyme and in turn, do not always accelerate reactions. Reactions have an optimal range of temperatures so temperatures above or below this range decrease the reaction rate. So for the first step of the experiment, pour 20 ml of starch…

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Chemical Reaction Lab Report

Discussion: The chemical reaction that happened in the experiment is, it amylase breaks down the enzymes in the saliva. The Benedict's test, is the test to figure out whether the glucose was in our substance.The IKI was used to test whether starch was in the substance. The chemical reaction that happened in the lab, was the color changes of the solution. If the result is negative, that means there is no solution involved. The starch was broken down into glucose by the saliva amylase which known…

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Chemical Reaction Lab Report Essay

The purpose of this lab was to study the four main types of chemical reactions, and describe these reactions using balanced chemical equations. This lab was done in an open classroom with air circulating vents, safety goggles were worn, long hair was tied up, and sleeves were rolled up. This lab was divided into seven different stations, each of which studies a different chemical reaction. The first station included copper (II) sulphide penta-hydrate, which was burned in a test tube using a Bunsen…

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What Is A Chemical Reaction Lab Essay

Forry/Stanton 1 Mckenna Forry & Megan Stanton October 26, 2014 Honors Chemistry/ Pd. 8/ Mrs. Gazzara Chemical Reaction Lab Objective:to examine the chemical properties of hydrochloric acid and copper chloride, to identify the types of reactions that they undergo and to determine if the law of conservation of mass applies to a sample chemical reaction in one of these series. Materials: ● Aluminum shot ● ammonium hydroxide solution ● cupric chloride solution ● hydrochloric acid solution…

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Essay on Lab: Chemical Reaction and Aluminum Foil

Purpose: This lab experiment is divided into two parts. The first part illustrates the effect of concentration on the rate of reaction. The second part depicts the effect of temperature on the reaction rate. The first experiment will be conducted with procedures already given; this experiment will examine the effect of concentration of distilled water to the rate of reaction of NaOH and HCl solutions and aluminum foil. Meanwhile, the second experiment will require the creation of procedures involving…

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Lab 14 Types Of Chemical Reactions Kaitlyn Bean Katie Green Emily Romo Period 5 Essay

Kaitlyn Bean Katie Green Emily Romo Honors Chem 10 February 18th, 2015 Background In this lab, one will determine which chemical reactions match up with the five possible types of reactions. In order to accomplish this, one will need to know the different signs that tell if a chemical reaction has been made. These visual clues include change of heat, formation of a gas, change in color, and the substance precipitating. The changing of heat means that the substance drastically changed colder or warmer…

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Analysis Of Physical And Chemical Separations

Physical and Chemical Separations 09/22/2013 Lab Date: 09/18/2013 Introduction/Background/Objective/Theory Lab 3 consisted of Physical and Chemical Separations. The lab is based on the concept of Conservation of mass. This simply means mass cannot be created nor destroyed. This includes chemical and physical reactions as well. Also, Heterogeneous are chemicals that are not completely mixed, and homogeneous are chemicals that have been mixed together completely. Lab 3 will be an example that…

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Essay Chemical Reactions and Equations

Chemical Reactions and Equations Purpose The “Chemical Reactions and Equations” lab was to observe physical and chemical properties associated with chemical reactions, to make note of/document the evidence of the chemical reaction, to practice balancing equations, to predict the products that form from a reaction, and to have an understanding; did the elements bond, break apart, or did they switch partners in the reaction (determine what happened to the reactant/s as they formed new product/s)…

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Lucas Goldoni Essay

Lucas Goldoni Bio Honors Lab Report The Effect of Enzyme Concentration, pH, and Temperature on the Rate of Reactions Abstract: In the lab we submerged pieces of potatoes within different concentration of Hydrogen Peroxide solution, then changed the temperature of the enviorment, and finally changed the pH of the enviorment. The potatoes acted as the enzymes and the Hydrogen Peroxide solution acted as the substrate in our experiment. We discovered that the effects on enzymes changing these variables…

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Mole Reaction Lab

Relationships in a Chemical Reaction lab, our goal was to investigate mass and mole relationships between the reactants and products of a chemical reaction. Our hypothesis was that if there is a 1:1 mole ratio between a product and reactant, then the given number of moles will produce the same number of moles of the product. This hypothesis was proven false because at the end of the reaction, less than 1 mole of sodium was produced. The second hypothesis was that if a chemical reaction occurs, then there…

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