1. Types of Chemical Reactions

2. Synthesis Reactions A + B  AB 2H2 + O2  2H2O
Smaller atoms/molecules combine to form larger molecules
A + B  AB
2H2 + O2  2H2O

3. Synthesis Reaction

4. Decomposition Reaction
The splitting of a large molecule into elements or smaller molecules
AB  A + B
Complimentary to synthesis reaction
2H2O  2H2 + O2

5. Decomposition Reaction

6. Single Displacement X + AB  AX + B Mg + 2AgNO3  2Ag + Mg(NO3)
One element (or replaces) another element from a compound
X + AB  AX + B
Mg + 2AgNO3  2Ag + Mg(NO3)

7. Single Displacement

8. Double Displacement AB + XY  AY + XB Pb(NO3)2 + 2KI PbI2 + 2KNO3
Metals in different compounds replace each other (switch partners)
AB + XY  AY + XB
Pb(NO3)2 + 2KI PbI2 + 2KNO3

9. Double Displacement

10. AB + O2(g)  oxide of A + oxide of B
Combustion
Fuel burned in the presence of oxygen to produce an oxide and heat energy
AB + O2(g)  oxide of A + oxide of B
C(s) + O2(g)  CO2(g)
C4H10(l) + O2(g)  CO2(g) + H2O(g)

11. Incomplete Combustion
Occurs when fuel is not completely converted into carbon dioxide and water
Can result in the production of toxic carbon monoxide

12. HCl(aq) + NaOH(aq)  NaCl(aq) + H2O(l)
Neutralization
A type of double displacement reaction
Acid + Base  Salt + H2O
HCl(aq) + NaOH(aq)  NaCl(aq) + H2O(l)