1. Types of Reactions and Predicting Products
Pre-AP Chemistry

2. Types of Reactions Reactions can be divided into 5 main types:
Synthesis/Combination
Decomposition
Single Displacement/Replacement
Double Displacement/Replacement
Combustion

3. Synthesis
Synthesis: 2 or more reactants combine to form 1 product Mg + O2 -> MgO

4. Decomposition
Decomposition: 1 reactant breaks down into 2 or more products (these would need to be balanced) H2O  H2 + O2 KClO3  KCl + O2

5. Single Displacement
Single Displacement: a single element replaces another in a compound MgBr2 + Cl2  MgCl2 + Br2 Fe + CuSO4  Cu + FeSO4

6. Double Displacement
Double Displacement: parts of two compounds switch places NaOH + FeCl3  Fe(OH)3 + NaCl

7. Combustion
And remember that there also exist combustion reactions: the combustion of hydrocarbons like methane ALWAYS produce carbon dioxide and water CH4 + O2  CO2 + H2O