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Classifying Chemical Reactions

Classifying Chemical Reactions. Bell Work. Write the balanced equation for the reaction between sucrose(C 12 H 22 O 11 ) and oxygen(O 2 ) that yields gaseous carbon dioxide and liquid water. Objective:. Classify Chemical Reactions Identify Each type of Chemical Reaction. Introduction.

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Classifying Chemical Reactions

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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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