1. Types of Reactions

2. The Six Different Types of Reactions
Synthesis Reaction
Decomposition Reaction
Single Replacement Reaction
Double Replacement Reaction
Combustion Reaction
Oxidation-Reduction Reaction

3. A + B  AB Synthesis Reaction
A reaction where two or more substances react to produce one substance
The reactants can be either elements or compounds
A + B  AB

4. Synthesis Reaction
2Na + Cl2  2NaCl A B A B

5. Decomposition Reaction
A reaction in which a compound breaks down into two or more simpler substances
The products may be elements or compounds
AB  A + B

6. Decomposition Reaction
2H2O  2H2 + O2 A B A B

7. Single Replacement Reaction
A reaction in which one element takes the place of another element in a compound
A + BC  B + AC

8. Single Replacement Reaction
2K + 2H2O  H2 + 2KOH
The Potassium (K) replaces the Hydrogen in water (H2O) to form Potassium Hydroxide (KOH) A B C B A C

9. Double Replacement Reaction
A reaction in which two different compounds exchange ions and create two new compounds
AB + CD  AD CB

10. Double Replacement Reaction
CaCO3 + 2HCl  CaCl2 + H2CO3 A B C D A D C B

11. Combustion Reaction
A reaction in which a substance reacts rapidly with oxygen
This often producing heat and light
Combustion reactions usually produce a compound + H2O

12. Combustion Reaction CH4 + 2O2  CO2 + 2H2O
Methane reacting with oxygen to produce Carbon Dioxide and H2O
CH4 + 2O2  CO2 + 2H2O

13. Oxidation - Reduction
Oxidation – Reduction reactions involve an atom or molecule losing or gaining an electron
Usually involves a metal and oxygen

14. Oxidation - Reduction
The Oxidation-Reduction reaction between Iron and Oxygen is often known as Rust