1. Chemical Reactions

2. 5 types of reactions: Combination/Synthesis Decomposition
Combustion
Single Displacement
Double Displacement

3. A combination reaction occurs when two or more reactants combine to form a single product.
A + B  C
Examples:
Na + Cl2  NaCl
Na2O + H2O  NaOH

4. A Decomposition reaction occurs when a single reactant breaks down (decomposes) into two or more products.
A  B + C
Examples:
H2O  H2 + O2
H2CO3  H2O + CO2

5. A single displacement reaction occurs when a single, more reactive element or group replaces a less reactive element or group.
A + BC  AC + B
Examples:
Zn + CuSO4  ZnSO4 + Cu
Al + HCl  AlCl3 + H2

6. Practice
Mg + Fe2O3  Fe + MgO
Single Displacement

7. Practice
PbSO4  PbSO3 + O2
Decomposition

8. Practice
NH3 + I2  N2I6 + H2
Single Displacement

9. Practice
H2O + SO3  H2SO4
Combination