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Understanding and Classifying Chemical Reactions: Sucrose Combustion Example

This resource provides an overview of the classification of chemical reactions, focusing on synthesis, decomposition, single replacement, double replacement, and combustion reactions. Learn to identify each type and balance equations, including the combustion of sucrose (C12H22O11) with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O). The document includes definitions and general forms of each reaction type, alongside practice problems to reinforce understanding of these fundamental concepts in chemistry.

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Understanding and Classifying Chemical Reactions: Sucrose Combustion Example

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  1. Classifying Chemical Reactions

  2. Bell Work Write the balanced equation for the reaction between sucrose(C12H22O11) and oxygen(O2) that yields gaseous carbon dioxide and liquid water.

  3. Objective: • Classify Chemical Reactions • Identify Each type of Chemical Reaction

  4. Introduction 4 Types of Chemical Reactions • Synthesis • Combustion • Decomposition • Replacement

  5. What is a Synthesis Reaction? • 2 or more substances combine to form a single compound. 2Na + Cl2 ----> 2NaCl General: A + B  AB +

  6. Knowledge Check: • Which reaction is a synthesis reaction? • 1. Fe + 2HCl --> FeCl2 + H2 • 2. 2Mg + O2 --> 2MgO • 3. 2H2O2 --> 2H2O + O2 • 4. NaOH + HCl --> NaCl + H2O

  7. What is a Decomposition Reaction? • A single compound breaks down to form two or more simpler substances H2CO3 -----------------> H2O + CO2 General: AB  A + B

  8. Knowledge Check: • Which reaction is a decomposition reaction? • 1. Fe + 2HCl --> FeCl2 + H2 • 2. 2Mg + O2 --> 2MgO • 3. 2H2O2 --> 2H2O + O2 • 4. NaOH + HCl --> NaCl + H2O

  9. What is a Single Replacement Reaction? • One element takes the place of another element. Zn + 2HCl -----> ZnCl2 +H2 General: AB + C  AC + B + + Zinc replaced hydrogen

  10. What is a Double Replacement Reaction? • 2 elements switch places to form new compounds. NaCl + AgNO3 ----> NaNO3 + AgCl General: AB + CD  AD + CB + + Chlorine and nitrate switch places

  11. Knowledge Check: • Which Reaction is Single …..….Double Replacement? • 1. Fe + 2HCl --> FeCl2 + H2 • 2. 2Mg + O2 --> 2MgO • 3. 2H2O2 --> 2H2O + O2 • 4. NaOH + HCl --> NaCl + H2O

  12. What is a Combustion Reaction? • Oxygen combines with a substance and releases energy (heat and/or light) • Examples: coal burning power plants fire gas turbines and jet engines guns and explosives Piston engines (cars) C(s) + O2 (g) CO2 (g) General: A + O2 AO

  13. Practice Problems • Page 298; Problems 29, 31, 32, & 33 • Balance the following Reactions: Zn + HCl ZnCl2 + H2

  14. Assessessment • What type of reaction is this? NaCl + AgF --> NaF + AgCl

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