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    Chemical Reactions

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    A chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. Chemical reactions are a very important part of technology and life itself. Burning fuels, making glass, brewing beer or even making wine are among the great handful of examples of things

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    RATES OF CHEMICAL REACTIONS REACTION ORDER FOR IODATE ION OBJECTIVE: To determine the order of a KIO3-NaHSO3 reaction with respect to the iodate ion. To determine a difference on the rate of the reaction when the solution is 10oC higher than a room temperature. BACKGROUND: The rate of a chemical reaction is the speed at which reactants are converted to products. Some reactions are very fast

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    2A – Assignment Chemical Reactions What is a catalyst and how does it work? A catalyst is a substance that provides a reaction pathway with lower activation energy. Understanding catalysts and their nature requires understanding the “Collision Theory”. Through the use of Collision Theory we can understand what is happening at the particle level during chemical reactions. In this theory chemical reactions are described in terms of the collisions of individual particles. For a reaction to occur, the

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    Chemical Reaction Essay

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    A chemical reaction is a process that leads to the transformation of one set of chemical substances to another. Chemical reactions make changes to the positions of electrons. Chemical reactions are summed up by a single chemical change. They tend to yield one or more products. A single reaction may contain more internal reactions. Chemists have now seen that certain reactions can change in time or space. Before 1920 chemists believed that changes in closed homogeneous systems were impossible. The

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    Catalysts and Chemical Reaction

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    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

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    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

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    Chemical Reactions

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    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

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    the copper when placed through of series of varying reactions. Reacting copper with varying substances enables a person to enhance their stoichiometry solving abilities and well as differentiate chemical reactions and write balanced equation. The lab was done over the course of five days, with each day catalyzing a new reaction. This resulted in enabling the ability of stoichiometry solving abilities to come easier and quickly identify a reaction, and correctly ending with almost the same of amount

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    A chemical reaction is a process that involves the rearrangement of the molecular or ionic structure of a substance. In the hot pack/ cold pack experiment a chemical reaction occurred. We were trying to find a temperature change where there was a rearrangement of atoms in a substance (substance change). A temperature change, color change, precipitate formation, odor, or change in acidity indicates that a chemical reaction has occurred. There was a temperature change which means that there was a chemical

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    Factors that Influence the Rate of a Chemical Reaction Aim The aim of this experiment is to find out what affects the rate at which a reaction occurs between sodium thiosulphate and hydrochloric acid. I want to find out whether and to what degree varying the concentration of sodium thiosulphate has any effect on the rate of reaction. Prediction I predict that the greater the concentration of Sodium Thiosulphate solution the faster the chemical reaction will take place. I think the concentration

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