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Types of Chemical Reactions Name_________________________ An Introduction to Types of Chemical Reactions The purpose of this Internet assignment is to provide you with an independent learning opportunity to learn about the different types of chemical reactions. The website address for this assignment is www.ric.edu/ptiskus/reactions. On the website you will find a brief description of the main types of chemical reactions. There are several representative reactions listed for each main type. For these representative reactions there are links to either videos or picture images of the reaction. Your task is to explore the different types of reactions and answer the accompanying questions to a specific reaction or the main reaction type. For all of the reactions listed you are required to convert the written description of the reaction into a word equation and then a balanced chemical equation. Note: Access to some of the websites may not be possible dependent upon your computer system and or the network connection. You are still required to work through each main type of reaction providing balanced chemical equations based on the word descriptions. I. How can I tell if a chemical reaction is occurring or has occurred? What are the indicators of a chemical change? Take a look at the image of a penny (zinc and copper metal) in nitric acid (HNO 3). The nitric acid is a clear, colorless liquid. Write down your observations proving that a chemical change is taking place in this mixture. II. Synthesis Reactions (Combination Reactions) For each of the reactions listed in this section write down the word equation and then balanced chemical equation. aluminum and bromine sodium and chlorine water and potassium Chemical Equations and Reactions 1 Document No. 8.2.01 Types of Chemical Reactions Name_________________________ II. Synthesis Reactions (Combination Reactions) List the types of evidence that a chemical reaction was taking place between the bromine and aluminum. Why does the reaction between bromine and aluminum stop? How does the aluminum bromide precipitate become deposited on the watch glass covering the beaker since it does not come in contact with the bromine liquid? Draw the Lewis dot diagram for water and potassium before the potassium is added to the water (label as prior to reaction). Draw the Lewis dot diagram for individual ions that binary ionic compound potassium hydroxide. Label the cation and the anion for this compound. III. Single-Replacement Reactions For each of the reactions listed in this section write down the word equation and then balanced chemical equation. aluminum and iron (III) oxide copper (II) oxide and carbon silver nitrate and copper III. Synthesis Reactions (Combination Reactions) continued Chemical Equations and Reactions 2 Document No. 8.2.01 Types of Chemical Reactions Name_________________________ tin (II) chloride and zinc List the types of evidence that a chemical reaction was taking place between the silver nitrate and copper. In the iron (III) Oxide and aluminum reaction the chemist illustrates the proper way to handle hot glassware or in this case the reaction crucible. What is the person doing to illustrate this method of safety? What physical property of matter is being used to confirm a chemical change has occurred in the iron (III) oxide and aluminum reaction? In the copper (II) oxide and carbon reaction the gas being evolved from the reaction is being captured and undergoes another chemical change. Write the reaction for this. IV. Double-Replacement Reactions For each of the reactions listed in this section write down the word equation and then balanced chemical equation. calcium carbonate and sulfurous acid lead (II) nitrate and potassium iodide sodium chloride and silver nitrate IV. Double-Replacement Reactions continued Chemical Equations and Reactions 3 Document No. 8.2.01 Types of Chemical Reactions Name_________________________ Based on the solubility table you have what is the precipitate in the lead (II) nitrate and potassium iodide reaction? What would be the atmospheric reaction that would produce sulfurous acid? V. Decomposition Reactions For each of the reactions listed in this section write down the word equation and then balanced chemical equation. water into hydrogen and oxygen nitrogen triiodide What is the evidence of a chemical reaction taking place in the decomposition of water? How are decomposition reactions different from the other main reaction types? VI. Combustion Reactions For each of the reactions listed in this section write down the word equation and then balanced chemical equation. hydrogen and oxygen phosphorous and oxygen Chemical Equations and Reactions 4 Document No. 8.2.01