Chemical reactions * Chemical reactions occur when substances undergo chemical changes to form new substances * Production of gas and change of color are sings of chemical reactions * Chemical reactions rearrange atoms * A reactant is a substance or molecule that participates in a chemical reaction * A product is a substance that forms in a chemical reaction Energy and Reactions * Energy must be added to break bonds. * Many forms of energy can be used to break bonds:
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Chemical Reactions Lab Report Introduction: Chemical reactions is a process that involves rearrangement of the molecular or ionic structure of a substance. There are different types of reaction such synthesis‚ decomposition‚ single replacement‚ double replacement‚ and combustion. Synthesis is where two or more reactants combine to create a product. For Decomposition‚ it is the opposite where a product breaks down into reactants. In Single Replacement‚ reactants switches an element with another element
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points) |Score | | | 1. For Part 2: Single-Displacement Reactions: For each of the four single-displacement reactions‚ describe what happened in each well. If a chemical reaction occurred‚ write a balanced equation for it. Then using the A‚ B symbols‚ write a general equation for a single-displacement reaction. Here are the chemical formulas of the reactants for each reaction: • zinc – Zn copper sulfate – CuSO4 • aluminum – Al copper
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There are many types of chemical reactions‚ five general ones of which I will be describing. Chemical changes are a result of chemical reactions. All chemical reactions involve a change in substances and a change in energy. Neither matter nor energy is created or destroyed in a chemical reaction‚ only changed. There are so many chemical reactions that it is helpful to classify them into 5 general types‚ which include the following: synthesis‚ combustion‚ decomposition‚ single-replacement‚ and double-replacement
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Interest rate pass-through: the case of Hungary Csilla Horváth‚ Judit Krekó‚ Anna Naszódi Magyar Nemzeti Bank‚ Budapest‚ 1850‚ Szabadság tér 8-9‚ Hungary Telephone: 00-36-1-428-2600‚ Fax: 00-36-1-428-2590 Email: horvathcs@mnb.hu‚ krekoj@mnb.hu‚ naszodia@mnb.hu 1 Interest rate pass-through: the case of Hungary Csilla Horváth‚ Judit Krekó‚ Anna Naszódi Abstract In this paper we analyze the interest rate pass-through in Hungary‚ with the help of ECM and TAR models‚ using both aggregated and bank
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Replacement Reactions (Data and Calculations) Objective: Classify the chemical reaction through observation‚ which each reagent produce when mixed with another reagent. After careful observation‚ be able to prove each observation using the net ionic equation. Background: First‚ a double-replacement reaction is when two cations in different compound switch anions‚ AX + BZ → BY. If either compounds are insoluble a precipitate occurs‚ and if there is no precipitate formed there is no reaction. Also‚
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investigating the possible outcomes‚ the company made the estimates shown in the following table: Expansion A Expansion B Initial Investment $12‚000 $12‚000 Annual Rate of Return Pessimistic 16% 10% Most likely 20% 20% Optimistic 24% 30% a. Determine the range of the rates of return for each of the two projects. b. Which project is less risky? Why? c. If you were making the investment decision‚ which one would you choose? Why? What does this imply about
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Megan Wierzbowski Organic II Laboratory Wed. 11-1:50 Title: Grignard Reaction with a Ketone: Triphenylmethanol Part 1 Objective: The goal of this experiment is to learn to make Grignard reagents. The reactions of the Grignard reagents with ketones form tertiary alcohols. These reagents are highly air- and moisture-sensitive materials. We will observe the formation of the Grignard reagents‚ which magnesium metal is transformed into organometallic salts. Experimental Procedure:
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much of the solids may cause chemical splattering or splashing. Wear chemical splash goggles‚ chemical-resistant gloves‚ and a chemical-resistant apron. Wash your hands with soap and water before leaving the lab. Procedure Part A: The Overall Reaction (refer to lab handout) Procedure Part B: Controlled Experiments! 1) Mix only the calcium chloride and red phenol‚ and observe any changes that occur. 2) Mix only the sodium bicarbonate and red phenol‚ and observe any changes that occur. 3) Mix
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EXPERIMENT # 14: Exothermic and endothermic reactions Date: 25/06/2012 Name: Meagen Reyes Year 11 PARTS A‚ B and C * For the procedures and equipment needed in these experiments‚ refer to page 73-74 in the STAWA Exploring chemistry stage 2 book Part A: solution process (dissociation) Solutions and their chemical equations | Initial temperature (in Celsius) | Final temperature (in Celsius) | Classification(exothermic or endothermic) | Sodium hydroxide NaOH(s) Na+(aq) + OH-(aq) + Energy
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