Classifying Chemical Reactions

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Presentation transcript:

Classifying Chemical Reactions

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

Classify Chemical Reactions Objective: Classify Chemical Reactions Identify Each type of Chemical Reaction

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

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

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

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

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

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

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

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

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

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

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