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Lab Report Kinetics of Chemical Reactions

- Lab Report Kinetics of Chemical Reactions Kinetics of chemical reactions is how fast a reaction occurs and determining how the presence of reactants affects reaction rates. In this experiment the rate of reaction for Fe+3 and I- is determined. Because the rate of chemical reactions relates directly to concentration of reactants, the rate law is used to find the rate constant, and calculated with specified temperatures. Two catalyst reactants are used in the experiment, thiosulfate and starch, to dictate the time of reactions....   [tags: Kinetics of Chemical Reactions]

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Chemical Reactions Of Chemical Kinetics

- Chemical kinetics is a branch of chemistry which refers to chemical reactions with respect to reaction rates, effect of various variables, re-arrangement of atoms, formation of intermediates and much more (Chung Chieh, 2016).The importance of chemical kinetics is that it provides evidence for the mechanisms of chemical processes and provides a very detailed description of what happens to each molecule —which bonds are broken and formed, and how the three-dimensional shapes of the chemicals changes during the course of a chemical reaction (Keith J....   [tags: Chemical kinetics, Chemical reaction, Chemistry]

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Chemical Reactions And The Chemical Reaction

- Introduction: In this lab, I determined the amount of heat exchanged in four different chemical reactions only using two different compounds and water. The two compounds used were Magnesium Hydroxide and Citric Acid. Both compounds were in there solid states in powder form. Magnesium Hydroxide was mixed with water and the change in heat was measured using a thermometer. The next reaction combined citric acid and magnesium hydroxide in water. The change in heat was measured as well. For the third reaction citric acid was placed in water to measure the change in heat....   [tags: Energy, Chemical reaction, Temperature, Chemistry]

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Reaction Rates Of Chemical Reactions

- Introduction Kinetics is the discovery and study of the reaction rates of chemical reactions. These reaction rates involve the pace or rate at which a reaction progresses. Many specific conditions can affect the reaction rate value; furthermore, the factors include the concentration of the reactants, the polarity of the solvent, and temperature1. The rate of reaction can be determined and studied using a rate law, an equation that correlates the rate with concentrations and a rate constant. This experiment’s reaction involving t-butyl chloride has a first order reaction rate, which means that the reaction’s rate law equation is the first order equation shown below....   [tags: Chemical reaction, Chemical kinetics]

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The Effect Of Chemical Reactions On The Body

- Introduction When chemical reactions occur in the body, enzymes are used to speed up the reactions and lower the energy of activation. The rate of reactions is increased due to the complex that is established by the enzyme and the substrate. This complex that forms between the two inhibit movement respective of the two and arranges the reactive groups of the substrates next to each other (1). Enzymes allow chemical equilibrium is able to be maintained throughout the reaction and are not consumed, while accelerating the reaction (2,3)....   [tags: Enzyme, Chemical reaction, Catalysis]

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Chemical Reactions And The Human Body

- The human body goes through many different reactions and processes that are necessary for humans to live. Chemical reactions by the human body are never seen with the human eye, but it is so vital that these processes are understood. Without this understanding, diseases and disorders can never be resolved or controlled. These processes may be small in size, but have a great deal of impact on the function of the human body. One vital process in the human body observed in chemistry is the idea of chemical kinetics....   [tags: Chemical reaction, Enzyme, Catalysis]

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Lab Report On Chemical Reactions

- Vadim Kavalenko - The focus of our 4th quarter in 9th Grade Science was chemistry. We spent a lot of time in the lab seeing first hand how chemical reactions occur, and continued to focus on the lab report writing process. Our lab and projects included a melting point lab, flame test lab, a pennies to gold lab, and a hydrogen gas lab. Next year students in 10th grade at HIS will study biology. Vadim has made definite progress this year as he has solved his problems with not completing assignments....   [tags: Chemical reaction, Chemistry, Experiment]

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The Effect Of Chemical Reactions On The Kinetics Of A Chemical Reaction

- Introduction and Purpose: The speed in which chemical reactions occur and the factors that affect the speed is with in the investigation of chemical kinetics, this laboratory experiment was done in a way that allowed a study into the kinetics of a chemical reaction. Accordingly, the collision theory is in factor for these chemical reactions, qualitatively explaining why the relations between reactions rates of different reactions show differences. A primitive principle for this theory contains that only under the condition of molecules colliding, will then a reaction occur....   [tags: Chemical reaction, Reaction rate, Chemistry]

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Chemical Reactions Of The Molar Of Combustion

- Introduction During chemical reactions, energy is either released or absorbed, normally as either heat or light energy. There are two types of reactions that involve heat, exothermic reactions and endothermic reactions. In an exothermic reaction heat energy is released and increases the temperature of its surroundings. Conversely in an endothermic reaction heat energy is absorbed and the surrounding temperature decreases. The measurement of change in heat is called calorimetry. The change in heat energy is known as the enthalpy change , and it is the quantity of heat released or absorbed during a reaction when 1.00 mol of a substance undergoes a chemical reaction while under constant pressur...   [tags: Thermodynamics, Energy, Enthalpy, Temperature]

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Temperature's Affect on Chemical Reactions

- There are many factors that affect the products of chemical reactions. All reactions are affected in a different way when exposed to these agents. Temperature is just one of many factors that can change things about reactions. When exposed to temperature change, the activation energy of a reaction can be met much more quickly (or slowly) than it would have been. As the temperature goes up, the rate of reaction increases. Temperature is a very flexible contributor to the rate of reactions and chemical reactions in general....   [tags: activation energy, physical chemistry]

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Lab Report On Chemical Reactions

- The purpose of the final unknown bacteria lab was to gain a better understanding of what our bacteria was and be able to state what our organism was and why we believe it to be that organism. This final lab report will encompass labs 9 through 13. There were five labs that were conducted in this lab report. The purpose of lab 9 was to use different biochemical tests to identify microorganisms. These tests test for a microorganisms ability to utilize various carbohydrates, broths, and starches, as sources of nutrients and energy....   [tags: Bacteria, Agar plate, Enterococcus faecalis]

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How Enzymes Affect The Rate Of Chemical Reactions

- Enzymes are biological catalysts - catalysts are substances that increase the rate of chemical reactions without being altered itself. Enzymes are also proteins that fold into complex shapes that allow smaller molecules to fit into them. The place where these substrate molecules fit is called the active site. The active site is the region of an enzyme where substrate molecules bind and undergo a chemical reaction. The active site consists of residues that form temporary bonds with the substrate and residues that catalyse a reaction of that substrate....   [tags: Enzyme, Catalysis, Chemical reaction, Metabolism]

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Chemistry: Reversible Chemical Reactions

- Introduction; Most chemical reactions are reversible which means that they react both forwards and backwards. A forward reaction is generically A + B -> C + D and a backward reaction is C + D -> A + B. Higher concentrations of A and B at the beginning of the reaction cause it to shift right towards C and D before beginning to slow down as more C and D are created. Eventually, the amount of A and B being formed is the same as the amount of A and B being used, which results in chemical equilibrium, denoted with Keq....   [tags: calculated concentrations, equilibrium]

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Chemical Reactions Of A Cell Voltage Generated By Redox Reactions

- Electrochemistry is a branch of chemistry which primarily focuses on the flow of electrons and the chemical reactions which occur due to the flow of those electrons. These chemical reactions are known as oxidation-reduction reactions, or simply redox reactions. Electrical energy provides the energy needed for the redox reactions to occur. Where oxidation occurs, reduction is certain to follow. Oxidation entails an increase in oxidation number, signifying a loss of electrons. Reduction entails a decrease in oxidation number, signifying a gain of electrons....   [tags: Electrochemistry, Redox, Electrochemical cell]

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The Sequence Of Chemical Reactions

- The Sequence of Chemical Reactions INTRODUCTION This experiment was to recover the most amount of copper after it is subjected to a sequence of reactions. The copper is originally in solid form, but the reactions will turn it into free Cu+2 ions floating in solution. The ions will then be regrouped to form solid copper once again. During this process, however, some of the Cu+2 ions may be lost. The copper will subjected to changes in pH and heat. These steps were responsible for the breakdown and reconstruction of the copper....   [tags: essays research papers]

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Investigating Rates of Chemical Reactions

- Investigating Rates of Chemical Reactions Planning. Introduction ============ I am going to investigate how increasing the concentration of a substance affects the rate of reaction. I will be studying how increasing the concentration of Sulphuric acid affects the rate of reaction when added to Magnesium. The equation for this is: Magnesium + Sulphuric Acid ® Magnesium Sulphate + Hydrogen Mg (s) + H2SO4 (aq) ® MgSO4 (aq) + H2 Background Knowledge ==================== There are many factors that affect the rate of a reaction; these include temperature, concentration, catalysts and surface area....   [tags: Papers]

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The Effects Of Chemical Reactions On The Development Of The Whole World

- As science and technology are advancing rapidly, the use of chemicals becomes more and more popular. Chemical reactions are taking place in nature and industries anytime. So far, there are more than a hundred elements has been found by people. And every single element has significant impact on the development of the whole world. Sulfur is an important element existing in nature throughout long history. As sulfur is being widely used, human life has changed tremendously. Sulfur plays a necessary role in daily life....   [tags: Oxygen, Sulfur, Sulfur dioxide, Sulfuric acid]

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Rates of Chemical Reactions

- RATES OF CHEMICAL REACTIONS REACTION ORDER FOR IODATE ION OBJECTIVE: <ol> <li value="1"> To determine the order of a KIO3-NaHSO3 reaction with respect to the iodate ion. <li value="2"> To determine a difference on the rate of the reaction when the solution is 10oC higher than a room temperature. </ol> BACKGROUND: The rate of a chemical reaction is the speed at which reactants are converted to products....   [tags: Chemistry]

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Classes of Chemical Reactions

- Classes of Chemical Reactions Whenever a reaction takes place, energy is changed as well when the substances react chemically. Scientists have taken these changes in energy and generalized them. Scientists can take these generalizations and discover more about the nature and tendencies of matter. In this lab, the purpose was to perform seven reactions, write down their equations, and identify the type of reaction. In this lab report, several methods of displaying this information will be applied....   [tags: essays research papers]

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Purification of Milk Process and Chemical Reactions

- In this study, a three step purification of alkaline phosphatase from non-pasteurized milk was reported. It included cream extraction, n-butanol treatment and acetone precipitation. Different parameters like buffer concentration, temperature, pH, substrate concentration, acetone and n-butanol treatment were optimized to maximize the enzyme activity. The enzyme was fruitfully purified upto homogeneity from the milk, with percentage recovery and fold purification of 56.17 and 17.67 respectively. The kinetic parameter were determined to be 0.927 (Km) and 55.86 (Vmax), with specific activity of 11.31 U/mg....   [tags: alkaline phosphatase, enzyme extraction]

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Chemical Reactions

- Chemical Reactions Chemical reactions are the heart of chemistry. People have always known that they exist. The Ancient Greeks were the firsts to speculate on the composition of matter. They thought that it was possible that individual particles made up matter. Later, in the Seventeenth Century, a German chemist named Georg Ernst Stahl was the first to postulate on chemical reaction, specifically, combustion. He said that a substance called phlogiston escaped into the air from all substances during combustion....   [tags: science]

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The Role Catalysts In Chemical Reactions, Their Importance In Industry

- The Role Catalysts In Chemical Reactions, Their Importance In Industry, Problems and New Developments OXFORD AND CAMBRIDGE SCHOOLS EXAMINATION BOARD. General Certificate Examination - Advanced Level Chemistry (Salters') - Paper 3 mock. ROBERT TAYLOR U6JW. A Catalyst is a substance that alters the rate of a reaction. The catalyst remains unchanged at the end of the reaction. The process is called catalysis. In this report I aim going to explain the role of catalysts in chemical reactions and their importance in industry....   [tags: essays research papers]

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Chemical Makeup And Acid Base Reactions

- Exaction is where a solute is transfer from solvent A to solvent B (Ketcha, 47). A possible method to do this is changing the chemical makeup by using acid-base reactions (Ketcha, 42). The acid-base reactions change the solubility of the solute. If the original solute is ionic and is dissolvable is solvent A but not B, then adding the acid HCl would change the solute to its conjugate acid. The resulting acid would then be soluble in B but not A. To revert the change, just add the base NaOH to the solution....   [tags: Solvent, Solubility, Chemistry, Solution]

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How an Acid (Coke) Can React Together with Potassium to Create a Charger for an iPone

- ... The Coke can is used to basically start the chemical reaction by the RCA cables that are put inside it which in return is still connected to the banana. Just like plugging the cables into a television, the red cable is usually used for right analog audio (the red goes in at the top end of the banana which is to the right) and the white cable is usually used for mono analog audio (the white goes in at the end of the fruit which is to the left.) The team used an iPhone because something electronic had to be used in this particular experiment to get the results that we were looking for so an iPhone was the chosen item....   [tags: chemical reactions, chemistry and electricity]

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Metabolic Pathways in the Body

- Metabolic pathways consist of a series of chemical reactions found within a cell and allow for the production of many different chemicals through the modification of a primary chemicals. These reactions must occur at an extremely fast rate for cells to maintain homeostasis and this is achieved through the introduction of enzymes in these metabolic reactions. Many different metabolic pathways can be found within plant and animal cells, each extremely elaborate, with the presence and variation of many different chemicals....   [tags: human chemical reactions]

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Inborn Metabolic Disease: Tyrosinemia

- Inborn Metabolic Disease: Tyrosinemia Metabolism is the different processes and enzyme-catalyzed reactions that the body uses to make energy. 1 Proteins, carbohydrates, fats, and amino acids are used to make the sugars and acids needed to fuel the body with the necessary components to sustain life. 1 The body can then store this energy in tissues, mainly in the liver and muscles, or it can store the energy in the form of body fat. This body fat can then act as a reserve or it can be used directly when it is needed....   [tags: chemical reactions, enzyme-catalyzed reactions]

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What is Glycation?

- There are many chemical reactions in the body that influence how it functions from the molecular to the cellular level, explaining how tissues, organs and systems work. At the same time, there are natural chemical reactions that occur in the body that explain how certain pathological processes evolve over time. These biochemical reactions include glycosylation and glycation. Glycosylation versus Glycation Glycosylation is the chemical reaction in which a simple sugar (carbohydrate) molecule is attached to a another molecule such as a protein, lipid, or other molecules like nucleic acids....   [tags: chemical reactions, nuclei acid]

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Enzymes: Biological Catalysts

- Introduction Enzymes are known as biological catalysts. (Ahmed) These enzymes bind to substrates. They have specific substrates that they have to bind to. The are where enzymes bind are called an active site. The job that a catalyst holds is to speed up the reaction. All this is only possible through chemical reaction. The input of energy given to chemical reactions is called activation energy. This is the process is what pushes the reaction to happen. Enzymes acts like a catalyst that speeds up without being consumed by the reaction....   [tags: chemical reactions, substrates, binding]

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The Rate Law for Chemical Reaction Among Hydrogen Peroxide, Iodide, and Acid

- The Rate Law for Chemical Reaction Among Hydrogen Peroxide, Iodide, and Acid To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the concentrations Experiment 3 Chemical Kinetics Objectives 1. To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the concentrations of H2O2, and H+ affects the rate of reaction. 2. To observe the effects of temperature and catalyst on the rate of reaction....   [tags: Rate Law Chemical Reactions Science Essays]

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Rate of Reaction of Dilute Hydrochloric Acid and Sodium Thiosulphate

- Rate of Reaction of Dilute Hydrochloric Acid and Sodium Thiosulphate To investigate the change in rate of reaction between DILUTE HYDROCHLORIC ACID and SODIUM THIOSULPHATE as the concentration varies. PLAN A chemical reaction takes place over a specific period of time i.e. which is the time for the reactants to be formed into the products. If the reactants take a relatively short time to form the products, the reaction is known as a FAST one. The RATE of that particular reaction is high. On the other hand, a reaction which takes a longer time is known as a SLOW reaction, and as a result is known to have a LOW rate of reaction....   [tags: Reaction Rates Chemical Reactions Essays]

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An Investigation into Determining the Relationship between pH and the Oxidation of Ascorbic Acid

- An Investigation into Determining the Relationship between pH and the Oxidation of Ascorbic Acid (C6H8O6) TABLE OF CONTENTS I. Experimental Design 1. Introduction Title 3 Background 3 Research Question 4 Aim...   [tags: oxidation reduction principle, chemical reactions]

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Rate of Reaction Between Marble Chips and Hydrochloric Acid

- Rate of Reaction Between Marble Chips and Hydrochloric Acid To investigate the factors which affect the rate of reaction between marble chips and hydrochloric acid, with one in specific detail. Scientific knowledge: Marble chips erode when they are exposed to acid rain or pollution. Erosion is evident when you look at older marble buildings as in certain cases the erosion take a long time. It is more likely to occur in areas, where there is more pollution. This is because there are a greater number of industries in city than in the countryside....   [tags: Reaction Rates Chemical Reactions Essays]

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The Effects of Acid Rain on Statues

- The Effects of Acid Rain on Statues Introduction ------------ During this investigation, I will use dilute hydrochloric acid as the acid rain and crushed calcium carbonate as the chemical of the statues. Then I will time how long it takes for the limestone powder to react until there is no more left when the acid is added to it. Rain contains acid naturally as it collects carbon dioxide from the air and makes carbonic acid. Rain normally has a pH of about 5.5 – it is slightly acidic due to the carbon dioxide dissolved in it....   [tags: Acid Rain Chemical Reactions Essays]

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The Activation Energy of Bromide ion and Bromate ion

- The Activation Energy of Bromide ion and Bromate ion To Determine the Activation Energy of the Reaction between Bromide ion and Bromate (V) ion in Acid Solution Objectives: By reacting Potassium Bromide and Potassium Bromate in the acid solution in varies temperature, we can then determine the Activation Energy of the reaction in different temperature through the equation:[IMAGE]. Questions: 1. Give an equation for the reaction between phenol and bromine. 2. What is the use of methyl orange in this experiment....   [tags: Chemical Reactions Reaction Rates Essays]

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Chemistry : What Kind Of Reactions?

- For centuries, many scientists and researchers have pondered on the idea of combining two or more substances together to create something new. These explorations have led to the idea of what kind of reactions would occur when diverse elements are combined. This is a concept known as chemistry, a part of science that corresponds with how matter is created from different properties and the process it goes through to create a new substance. Chemistry is a scientific concept that is used in everyday life and is a crucial part in the development of new technology and substances that allow today’s quality of life....   [tags: Chemistry, Chemical reaction, Chemical substance]

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A Study Of Chemical Kinetics

- Chemical kinetics is the study of rates of chemical processes with respect to reaction rates, result of differing variables, re-arrangement of atoms, formation and intermediates etc (Theodore L. Brown,2010)(Chung Chieh,2016). The study of chemical kinetics is one that is a major importance in chemical research. It is powerful research tool in determining the reaction mechanism of several different reactions in chemistry(The University of Sydney,2002). Iodine clock reactions are principal examples of chemical kinetics....   [tags: Chemical kinetics, Chemical reaction]

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The Experiment Of Exothermic Reactions

- The second experiment is exothermic reactions because it gives out heat energy to the surrounding and energy is released more than it absorbed. It also has a negative energy change. In terms of bonds breaking or forming, the first experiment its forming new bonds, because when alcohols are burnt, the reaction is always overall exothermic. Because more energy is released when new bonds are form than is being consumed. If I compared my result to the literature values, are by no means accurate. But I could not have made the experiment completely efficient in the heat transfer....   [tags: Atom, Electric charge, Chemical bonding, Electron]

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A Experiment On The Chemical Equation

- In the demo experiment, we placed 10 grams of Ammonium dichromate in the form of a solid before starting the experiment. When the experiment begins the Ammonium dichromate is burned up and then produces Chromium (III) oxide as a solid, Nitrogen gas and water in form of a gas. In the experiment, we combined Zinc Chloride and Sodium Sulfide in which both chemicals are aqueous. The result of the combination was Zinc Sulfide a solid and Sodium Chloride an aqueous solution. In the alternate experiment, we combined Lead (II) Nitrate and Potassium Iodide in which both chemicals are aqueous....   [tags: Chemistry, Chemical reaction, Chemical equation]

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The Chemical Clock And Oscillating Systems

- Cave Spring High School The Chemical Clock and Oscillating Systems Sean P. Romano Pre-AP Chemistry Elizabeth Taylor 25 November 2014 Sean P. Romano Elizabeth Taylor Pre-AP Chemistry 25 November 2014 The Chemical Clock and Oscillating Systems The word chemical as defined by Merriam Webster’s Dictionary is “A substance (such as an element or compound) that is made by a chemical process.” In correspondence to the word clock, in which is defined as “Any periodic system by which time is measured”, a unique complexity is formed between the two when conjoined....   [tags: Chemical reaction, Chemistry]

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Synthesis Of Multicomponent Reactions Using Nanomagnetic Catalyst Under Solvent Free Condition

- 1. Nanomagnetic-supported sulfonic acid is found to be a powerful and reusable heterogeneous catalyst for the efficient synthesis of Pyrimidinones. In this study we use various ketones such as acetophenone and cyclopentanone in one-pot synthesis of Pyrimidinones. Our objective is to improve conditions for the synthesis of multicomponent reactions using nanomagnetic catalyst under solvent free condition. A Number of excellent and significant results have been developed that lead our perspective understanding of the effect of the magnetic nanoparticles when they are used as catalysts....   [tags: Chemistry, Chemical reaction, Catalysis]

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Enzymes And The Chemical Reaction

- Introduction Enzymes are used in chemical reactions to speed up the reaction that is occurring and are biological catalysts. Enzymes can participate in a chemical reaction without being used up or destroyed, in normal conditions (Morris, Hartl, Knoll, & Lue, 2013). Although enzymes can go from one chemical reaction to another, only certain substrates, or reactants, can be paired with certain enzymes such as peroxidase to hydrogen peroxide as performed in Lab 20. These substrates bind to small caverns in the enzymes called active sites, and the chemical reaction begins (Morris et al., 2013)....   [tags: Enzyme, PH, Chemical equilibrium, Chemistry]

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Distinguishing Between Chemical And Physical Changes

- Lab Title: Distinguishing Between Chemical and Physical Changes in Matter Purpose: The objective of this lab is to determine if there are chemical or physical changes that occur after mixing various forms of matter. To do this the following items are mixed together and macroscopic changes are observed and recorded: Starch + I2, Food coloring + NaOCl, Food coloring + CH3COOH, Red cabbage + NH3, Red cabbage + CH3COOH, NaHCO3 + NH3, NaHCO3 + CH3COOH, Na2CO3 + CH3COOH, MgSO4 + CH3COOH, MgSO4 + NH3 and MgSO4 + Na2CO3....   [tags: Chemistry, Chemical reaction, Ammonia]

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Chemical Kinetics: Enzymes

- Chemical Kinetics is the branch of chemistry that studies the speed at which a chemical reaction occur and the factor that influence this speed. What is meant by the speed of a reaction is the rate at which the concentrations of reactants and products change within a time period. Some reactions occur almost instantaneously, while others take days or years. Chemical kinetics understanding I used in the process of designing drugs, controlling pollution and the processing of food. Most of the time chemical kinetics is used to speed or to increase the rate of a reaction rather than to maximize the amount of product....   [tags: Chemical Kinetics: Enzymes]

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The Reaction Of Chemical Kinetics

- Objective: To calculate and find the reaction order by using the concentration of crystal violet. Introduction: Chemical kinetics is a branch of chemistry that involves reaction rates and the steps that they follow in. It tells you how fast a reaction can happen and the steps it takes to make complete the reaction (2). An application of chemical kinetics in everyday life is the mechanics of popcorn. The rate it pops depends on how much water is in a kernel. The more water it has the quicker the steam heats up and causes a reaction- the popping of the kernel (3)....   [tags: Rate equation, Chemical kinetics, Reaction rate]

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Chemical Decomposition And Its Effects On Organic Materials

- Introduction Pyrolysis Background Pyrolysis is defined as the chemical decomposition that is induced in organic materials by using heat in the absence of oxygen. In practice however, it is very difficult for one to achieve an oxygen-free atmosphere. Therefore the actual pyrolytic systems are operated in environments that have nominal stoichiometric quantities of oxygen. The reason for this is that there will be some oxygen present in the pyrolytic systems, and this will result in nominal oxidation with the pyrolysis....   [tags: Chemical kinetics, Chemical reaction]

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Chemical Explosives Classified

- According to the Merriam-Webster dictionary, explosives occur when a loud and violent release of energy takes place, causing the break up and shock of any nearby materials. Explosives were first introduced from a scientific point of view in the 1840’s when a popular substance known as black powder served as a convenient bullet for the use of guns and also fireworks (Shu, 2012). When realization struck that the amount of smoke being released from the black powder was far too extreme, a new method of the same uses was needed to cause less strain and less physical damage....   [tags: chemical products, propellants]

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Catalysts and Chemical Reaction

- CATALYSTS Catalysts are substances used to increase or decrease the rate of a chemical reaction. A catalyst is a substance which alters the rate of a chemical reaction but is chemically unchanged at the end of the reaction.The word catalysts originally comes from the word Catalysis meaning the change in rate of a chemical reaction. Catalysts unlike other substances, may participate in many chemical transformations but never consumed by the reaction itself. This means that, when a catalyst is added to two substances to increase the reaction rate between them, the catalyst isn't consumed and may be used again.([3]"Chem4Kids.com: Reactions: Catalysts and Inhibitors.") For example, the decompos...   [tags: Definition, Function, Environmental Effects]

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Chemical Reaction Experiment Using Propane and Iodine

- Get A Reaction Out Of This. A chemical reaction occurs when one or more substances change to produce one or more different substances. For example, some evidence that a chemical reaction has occurred is possible changes in energy, release of energy, formation of a new substance, or reduction or increase in temperature. This lab will be conducted in order to create a chemical reaction by changing the reaction rate of a substance. In order to change the reaction rate, a catalyst needs to be added.in this case the catalyst in a hydrogen ion....   [tags: Lab, Elements, Reaction]

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Photosynthesis And The Light Dependent Reactions

- Photosynthesis is a process that occurs in plant cells that is required for life in all organisms. It creates energy for the plant and other organisms that consume the plant, while it also creates oxygen for animals. Light energy is converted into chemical energy through photosynthesis within a plant cell (Campbell). Some of the reactions that take place require the use of light while others do not. The light-dependent reactions directly produce ATP and NADPH. Photosystem I and II are primarily responsible for the light dependent reactions as they capture photons from the air and transform them through a variety of process into energy usable by the cell (Department of Biological Sciences 201...   [tags: Photosynthesis, Chloroplast, Chlorophyll]

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Photosynthesis And The Light Reactions

- Introduction Photosynthesis is the way green plants use light to convert water and carbon dioxide into glucose (Photosynthesis, 2005). Oxygen is given off during this process (Photosynthesis, 2005). The formula for the photosynthesis reaction is stated below. 6 H20 (water) + 6 CO2 (carbon dioxide) (sunlight) C6H12O6 (glucose) + 6 O2 (oxygen) Photosynthesis can be squandered down to two parts: the light reactions and the dark reactions. The light reactions, the first stage of photosynthesis, takes place in the thylakoid membrane of the chloroplast and convert a photon (light energy) into chemical energy by exciting an electron into a higher orbital....   [tags: Photosynthesis, Carbon dioxide, Oxygen, Thylakoid]

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Experimenting With Enzymatic Reactions

- Experiment : Enzymatic Reactions Introduction Enzymes can be defined as proteins that catalyze chemical reactions, while enzyme ligands are known as substrates (Lodish et al, 2012). The active site is the region of the enzyme where catalysis occurs and energy is needed for substrates to bind to it. Enzymatic activity assays are based on detection of the loss of a substrate or the formation of a product. The presence of enzymes allows the increase of chemical reaction rates by lowering the free energy barrier that separates the reactants and products (Voet et al, 2012)....   [tags: Michaelis-Menten equation, alkaline ]

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Enzyme Catalyzed Reactions

- Introduction In todays laboratory exercise, one of the factors that affect the enzyme activity will be examined. All enzymes are proteins. The function of enzymes are to accelerate defined chemical reactions by alternating the rate of the reaction. They will not trigger a reaction to take place that would not occur naturally. Having a particular enzyme to catalyze each of the chemical reactions that take place in a living cell, total control of metabolism can be sustained by an organism. Catalase is an enzyme found in cellular organelles called peroxisomes....   [tags: temperature, substrate, proteins]

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Factors Which Influence the Rates of Reactions

- ... The acids were Hydrochloric acid, acetic acid, sulfuric acid and phosphoric acid. The zinc reacted quickly with the hydrochloric acid and created a lot of bubbles and it was followed shortly after by the zinc in sulfuric acid which also created bubbles. The zinc in the phosphoric acid reacted next with some bubbles and finally the zinc in the acetic acid reacted last with some bubbles. In the final part of phase one which was steps 9-11, five different metals were placed in Hydrochloric acid....   [tags: chemistry, experiment, collision theory]

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Gas Equilibriums: Examples of Reversible Reactions

- Gas Equilibriums: examples of Reversible Reactions Q1. Identify the general chemical and physical characteristics of gas equilibriums as a group. Explain the forward and reverse reaction mechanisms. Use nitrogen dioxide and hydrogen iodide as examples and explain how equilibrium is reached. The general chemical characteristic of gas equilibriums is when the concentrations of reactants and products do not change with time. This is known as the state of reversible reaction. At this state, pressure, density, colour and concentration can be recognised....   [tags: Chemistry ]

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Radiation Pressure Effect on Polymerization Reactions

- A laser trap, or an optical trap, is created by tightly focusing a laser beam with an objective lens of high numerical aperture (NA).1 The trap is formed at the focal point of the objective, which is able to hold a small particle at its center. In other words, a dielectric particle near the focus will experience a force due to the transfer of momentum from the scattering of incident photons. The resulting optical force has two components: a scattering force in the direction of light propagation and a gradient force in the direction of the spatial light gradient....   [tags: Laser Beams, Chemistry, Molecules]

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Rates of Reactions

- Rates of Reactions Aim: I am going to investigate how the rate of the reaction between sodium thiosulphate and hydrochloric acid depends on the concentration of sodium thiosulphate. The reaction rate of a chemical reaction is the speed of production of products from reactants. Sodium thiosulphate + hydrochloric acid ==> sodium chloride + sulphur dioxide + water + sulphur Na2S2O3 (aq) + 2HCl (aq) ==> 2NaCl (aq) + SO2 (aq) + H2O (l) + S(s) The solid sulphur (S(s)) formed in this reaction makes the colourless solution go cloudy....   [tags: GCSE Chemistry Coursework Investigation]

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Statement of Purpose for Chemical Engineering

- Ever since I began studying science and mathematics at all levels of educations I have always had an interest in the production of useful materials. In the growing turmoil of today; a world full of global warming and diminishing resources, questions often arise in my mind such as, "can we make a more efficient, more durable and a renewable resource that will overshadow fossil fuels. and have less of an impact on our environment?" Up to now, I have not found a solution to these questions and answering these questions is a personal aspiration of mine which I aim to fulfil by achieving a degree in Chemical engineering and eventually I will contribute to the field in my own unique way....   [tags: resources, education, sustainable]

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The Chemical Level Of Organization

- MOLECULES & CELLS The chemical level of organisation includes atoms, molecules, how they interact through chemical reactions and the formation of molecules. Of all elements carbon (C), hydrogen (H), oxygen (O), nitrogen (N) and calcium (Ca) are essential for maintaining life (Tortora & Grabowski, 1996, p.4). Carbon is especially crucial to many biological processes due to its atomic structure with four valence shell electrons allowing it bond with a wide range of other carbon atoms to form large atoms of many different shapes....   [tags: DNA, Protein, Cell nucleus, RNA]

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The Chemical Equation For Water

- Please choose one of the molecules that we learned about in the readings, and describe it. Water is one of the most common substances on the the planet covering over 70% of the Earth 's surface. We ourselves are also made up of mostly water and it 's a trait shared by all other living organisms. It is unusual in that it can exist in 3 different states of matter: solid, liquid and gaseous. At standard ambient temperature and pressure it is a liquid and is almost colourless with little to no smell or taste of it 's own....   [tags: Water, Oxygen, Atom, Hydrogen]

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Concept 4.1 : Cells Provide Compartments For Biochemical Reactions

- Concept 4.1: Cells Provide Compartments for Biochemical Reactions Cell theory: Cells are the basis units of life All living things are made up of cells All cells come from another cell Studying cell biology is like the same as studying life b/c of the underlying principles regarding the two. Life is a continuous process spanning back million/billions of years Cell size are highly limited because of the surface area to volume ratio. As volume goes up, so does its biological functions but the surface area does not increase as fast....   [tags: Cell, Eukaryote, Organelle, Bacteria]

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My Pursuit of a Chemical Engineering Degree

- As a school going kid, I used to wonder what may be the driving force of movement in daily life, so I approached my dad. He simply replied food and the energy derived from it. But as a kid I quiet didn’t understand what actually happens in the process. As years progressed, I developed a keen interest towards science by the magic it is capable of and the logic behind it. I eventually learnt that the body derived its energy in the form of food from the earthly element, carbon. Although 50% of the body was made of water, it is edible form of carbon that fuels us....   [tags: statement of purpose, career choices]

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Equilibrium Reaction Lab

- IBDP Chemistry IA: Equilibrium Reaction Lab Introduction: Reactions are based on collisions of particles, in which the particles must have sufficient energy. Some chemical reactions are reversible, and when the rate of the forward reaction equals the rate of the reverse reaction, the process has reached equilibrium. As it will appear to have stopped, as there is no overall change due to the rates being equal. Through this lab, we will be investigating one factor that will affect the equilibrium constant....   [tags: Chemistry, Collision of Particles, Reactions]

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The Chemical And Biochemical Phenomena Of The Natural World

- Water Acidification Humans are inherently greedy, as a race humans seem to believe that everything around them exists to please them, to be used by them, to serve them. Unfortunately, the rest of the universe has not received this message. The world is deteriorating, humans are sucking the life out of it like a parasite in its host. Much of the damage is irrevocable, however with the support of scientists, an attempt can be made to alter the world to make it inhabitable, for humans and animals alike....   [tags: Carbon dioxide, Oxygen, Water, Acid]

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Investigating Rates of Reactions

- Investigating Rates of Reactions My aim is to investigate what factors affect the rate of reaction between magnesium and hydrochloric acid. The factor that I will be focusing on is the concentration of Hydrochloric acid. [IMAGE]Reaction Equation: Mg (s) +2HCl (aq) = MgCl2 (aq) +H2 (g) Magnesium + Hydrochloric Acid = Magnesium Chloride + Hydrogen There are several different variables you can such as temperature, concentration; surface area and whether or not to use a catalyst or not these all affect the rate of reaction....   [tags: Papers]

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Kinetics Of Ester Hydrolysis Catalyzed By Digestion

- Kinetics of Ester Hydrolysis Catalyzed By Imidazole Experiment 3 Ban He Lab Partner: Colton Kincy TA: Ally Fairman September 19, 2014 Abstract: The purpose of the experiment was to study the kinetics of the hydrolysis of ester, p-nitrophenyl acetate (NPA) that is catalyzed by the buffer imidazole (Im). In terms of kinetics, specifically speaking, the rate of reaction as determined by the concentration, reaction orders, and rate constant with each species in a chemical reaction. By using the concentration of the catalyst and the temperature, the overall reaction rate was determined....   [tags: Chemical reaction, Chemical kinetics]

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Investigating Factors Affecting a Chemical Reaction

- Investigating Factors Affecting a Chemical Reaction Chemical reactions take place in all living and non- living things. As a chemical reaction takes place the reactants concentration decreases and the concentration of products increases with time. The rate of reaction (reaction velocity) can be defined as the rate of change in concentration of a stated reactant or product with time. The rate of a reactant per unit if time or the amount of a product produces per unit of time....   [tags: Papers]

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Investigating The Reaction Rate Of The Concentration Of Reactants Or Products Per Unit Of Time

- Introduction: A chemical reaction is a process in which one or more substances are converted into other substances (Brown et al. 2015). The speed of a chemical reaction is called the reaction rate (Brown et al. 2015). The reaction rate is the change in the concentration of reactants or products per unit of time (Brown et al. 2015). Sometimes it is possible to measure the rate of reaction by timing a change in appearance (Van Norman 1963). Activation energy is the least amount of energy needed to break the chemical bonds of reactant molecules so that they can form new products (LAB)....   [tags: Chemical reaction, Chemistry, Reaction rate]

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A Brief Note On Chemical And Chemical Analysis

- Miniaturisation is progressively applied to biological and chemical analysis processes. Lab-on-a-chip refers to technologies which allow processes usually involving a laboratory combination and analysis of chemicals on a much miniaturised scale, within a portable or handheld device. Lab-on-a-chip (LOC) is a device that integrates one or more laboratory functions into a chip with only a few square centimetres or millimetres in size. [a] There are numerous applications of this device in several areas including medical diagnostics, food and environmental analysis and DNA sequencing....   [tags: Immune system, White blood cell, Blood tests]

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Lab Report Testing Reactions with a Calorimeter

- Lab Report Testing Reactions with a Calorimeter A team was sent to the chemical manufacturing division of a small chemical company to help the technicians with experiments. Since the notes written by the technicians were inaccurate and unfinished, all of the experiments they had preformed needed to redone and documented correctly. The head of the company gave the new team the task of trying to figure out why some chemical reactions caused the reaction vessel to get cold and others caused the vessel to get hot....   [tags: Papers]

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The Effect Of Concentration And Temperature On The Rate Of Reaction

- The purpose of this experiment is to understand how various chemicals interact with one another in order to determine the role of each chemical. In addition to this, the effects that concentration and temperature has on the rate of reaction were determined. In order to do this multiple trials and observations were made while mixing constant concentrations of the chemicals in order to test a specific chemical which varied in concentrations. To determine the effect of temperature, a solution was either heated or cooled....   [tags: Chemical reaction, Reaction rate, Rate equation]

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The Two Types of Reactions in Polymerization

- Polymerization can be divided into the two types of reactions, such as chain-growth and step-growth polymerization. Cationic polymerization is the step-growth type of polymerization. Otherwise, it is called as addition polymerization since the reaction requires addition of the substance of a certain initiator or a catalyst. In the cationic polymerization, the catalyst is cationic and it transfers the charge to the monomer in reac-tion. Cationic polymerization of biological oils occurs in presence of superacids....   [tags: chain and step growth, cationic polymerization]

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Chemistry And Its Effect On Our Lives

- Chemistry is important and surrounds us in our everyday lives. People use chemistry quite often without even realizing it. An important term in chemistry is to know what term matter means. Matter is something that occupies space. People are involved with chemistry as soon as they are born and also experience it every morning when they wake up. As people, we experience chemistry when we walk, eat, sleep, breathe, drink, and many other things that we do in our everyday life. An interesting and important fact to know is that our body knows chemistry and is made up of it....   [tags: Chemical reaction, Chemistry, Chemical substance]

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The Importance of Enzymes in Our Body

- ... Enzymes are characterized by certain properties. Certain enzymatic processes are reversible; depending on the conditions same enzymes may accelerate the process of decomposition and the process of synthesis of substance. Enzymes are very sensitive to temperature change. Enzymes show the highest activity at 40-50° C. Therefore, to prevent damage to products they are stored in freezing environment or in room temperature. (Campbell biology, pg. 152-56) The hypothesis that I make on a temperature for the experiment will be, as the temperature increases, the enzymes reaction will also increase....   [tags: protien, reactions, organisms, lactase]

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The Effect Of Substrate Concentration On Enzyme Concentration And Reaction Time Upon The Direction Of An Enzymatic Reaction

- The purpose of this laboratory experiment was to determine the effects of substrate concentration, enzyme concentration, and reaction time upon the direction of an enzymatic reaction. The effects of each of the preceding variables were determined using various diagnostic tests, as well as designated positive and negative controls. Numerous diagnostic tests may be used to identify macromolecules in solution, which is especially important in the context of this laboratory, wherein one needs to identify whether a macromolecule has undergone hydrolysis, synthesis or phosphorolysis alongside the aid of a catalyst, and if so, at what rate the reaction had ensued (Chary & Sharma, 2004)....   [tags: Enzyme, Chemical reaction, Starch, Chemistry]

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Biochemical Reactions and Enzyme Kinetics

- Enzyme Kinetics Enzymes are described as the organic catalysts, which increase the rate of reaction of a biochemical reaction. Enzymes are proteins that speed up the rate of reaction without being used up, and therefore they are reusable (Jonathan, 2012). The enzyme studied in this lab was succinate dehydrogenase. Enzyme kinetics is the study of how biological catalysts increase the reaction rate in reactions. Without the catalysts, the biological procedures necessary for organisms would not continue at a rate that could sustain life....   [tags: proteins, mitochondria, dna]

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Sorption and the Process of Nutrient Cycling

- Sorption is a process that results in the association of a liquid or a gas phase with a solid material. The solid particle that takes up another material is referred to as the sorbent, while the material that is taken up is called the sorbate. When the sorbate adheres to a 2 dimensional surface the process is called adsorption and occurs onto the surface of minerals through van der Waals, dipole-dipole interactions, and electrostatic charges (Hemond and Fechner-Levy, 2000). Absorption occurs into a 3 dimensional surface....   [tags: soil, organic, reactions]

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Alchemy: The Key to Modern Chemistry

- ... Here on earth we have a very abundant supply as well, the earth is made up of about 34.6% of the stuff (this does not include the atmosphere, just the mass of the earth itself). (Onlinemetals) Moving on to another culture that has changed the world in great ways through its study and application of alchemy: The Chinese. The people in China have produced some of the greatest modern marvels that we know today. The one that was in greatest association with alchemy was their invention of gunpowder....   [tags: accuate, science, reactions]

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Detecting Signs Of Chemical Change

- Detecting Signs of Chemical Change Abstract: The objective of this experiment will be to combine various substances, liquids and metals, and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical. Introduction: An elements¡¦ reaction to certain substances may be predicted by its placement on the Periodic Table of Elements. Across a period, an element on the left will react with more vigor than one on the right, of the same period....   [tags: Chemistry Experiment]

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Investigation into how to measure the rate of a chemical reaction and

- Investigation into how to measure the rate of a chemical reaction and how to change the rate of a reaction. Investigation into how to measure the rate of a chemical reaction and how to change the rate of a reaction My task is to produce a piece of coursework investigating rates of reaction, and the effect different changes have on them. The rate of reaction is the rate of the loss of a reactant or the rate of formation of a product during a chemical reaction. There are five factors which affect the rate of reaction according to the collision theory of reacting particles: temperature, concentration (of solution), pressure (in gases), surface area (of solid reactants) and catalysts....   [tags: GCSE Chemistry Coursework Investigation]

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Love: A Chemical Reaction or a Social Phenomenon?

- According to the Webster's dictionary love is defined as “a feeling of strong personal attachment; ardent affection or the strong liking of another person.” However, in all actuality what is love. What is it that causes the butterflies. What is it that causes the emotions that can't be described in words other than, “you just know?” the feelings for every person are unique when it comes to love which makes defining it even more difficult. Even though the relationships and the experiences differ for each person; the concept of love all involves the same three stages- lust, attraction, and attachment....   [tags: Psychology]

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