1. Types of Chemical Reactions
Ms. Samayoa
Chemistry
Birmingham Community Charter High School

2. Synthesis
When two or more simple compounds combine to form a more complicated one
Dance Analogy: _________ and _________ each come by themselves to a dance and end up dancing with each other all night

3. Examples of Synthesis Reactions
Mg + O2 ---> MgO
Fe + O2 ---> Fe2O3
KCl + O2 ---> KClO3

4. Decomposition (the opposite of a synthesis reaction)
A complex molecule breaks down to make simpler ones
Dance Analogy: ________ and _________ come together to a dance but get in a fight and leave by themselves

5. Examples of Decomposition
Ni(ClO3)2 ---> NiCl2 + O2
Ag2O ---> Ag + O2
Zn(CO3) ---> ZnO + CO2

6. Single Displacement
When one element trades places with another element in a compound
Dance Analogy: __________ and __________ come together to a dance, but ________ finds another person to dance with (____________) while ______________ is left by themselves

7. Examples of Simple Displacement
Cu + AgNO3 ---> Ag + Cu(NO3)2
Fe + Cu(NO3)2 ---> Fe(NO3)2 + Cu
Zn + HCl ---> ZnCl2 + H2

8. Double Displacement
The anions and cations of two different molecules switch places forming two entirely different compounds
Dance Analogy: Two couples (__________ & __________) and (____________ & _____________) come to the dance together but end up switching dates

9. Examples of Double Displacement
KOH + H2SO4 ---> K2SO4 + H2O
FeS + HCl ---> FeCl2 + H2S
NaCl + H2SO4 ---> Na2SO4 + HCl

10. Combustion Reactions
Occurs when oxygen reacts with a hydrocarbon to produce water and carbon dioxide
A hydrocarbon is a compound containing only Carbon, Hydrogen, and sometimes oxygen
CXHY + O2  H2O + CO2

11. Combustion Reaction Examples
CH4 + O2 ---> CO2 + H2O
C2H6 + O2 ---> CO2 + H2O
C6H12O6 + O2 ---> CO2 + H2O

12. Steps to Classifying Reactions
1. Does the reaction contain oxygen, carbon dioxide and water? If yes, then it is combustion.
Do simple molecules form one more complicated product? If yes, then it is synthesis.
3. Does a single reactant break apart to 2 or more simpler products? Then it is decomposition.

13. Steps to Classifying Reactions Continued. . . .
4. Is there an ionic compound and a single element on the reactant side and product side? Then it is single displacement.
5. Are all compounds ionic? Then it is double displacement.

14. Which type of reaction?
4 P + 5 O2  P4O10
Synthesis

15. Which type of reaction?
Cl2 + 2NaBr  2NaCl + O2
Single Replacement

16. Double Replacement Which type of reaction?
BaCl2 + Na2SO4 2NaCl + BaSO4
Double
Replacement

17. Which type of reaction?
2 HgO + Cl2 2HgCl + O2
Single Replacement

18. Which type of reaction?
C6H12O6 + O2 ---> CO2 + H2O
Combustion

19. Which type of reaction?
2 Al2O3  4 Al + 3 O2
Decomposition

20. Which type of reaction?
CuCl2 + H2S  CuS + 2HCl
Double
Replacement

21. Which type of reaction?
3 H2 + N2  2 NH3
Synthesis

22. Which type of reaction?
3 H2 + N2  2 NH3
Synthesis

23. Which type of reaction?
2C3H8 + 7O2 → 6CO2 + 8H2O
Combustion