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

4. 4 Types of Chemical Reactions
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
H2CO > 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 + O AO

13. 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

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