1. Reaction Types
Combustion Reactions

2. Combustion Reactions
“The Blow Up” – Matter reacts with O2 to produce a new product(s) and releases energy.
Reactants = 2 (One MUST be O2)
Products = This can vary

3. Combustion Reactions
Fe(s) O2 (g)

4. Combustion Reactions Special Case: Hydrocarbon + O2
A hydrocarbon is an compound that contains at least C and H
Examples include: CH C2H5OH CH3COOH

5. Combustion Reactions
When hydrocarbons are combusted, they always produce the same two products.
CO2 carbon dioxide
H2O water

6. Combustion Reactions
Example:
CH O2 CO H2O
CH O2 CO H2O

7. Combustion Reactions Be careful when you are in the lab……
Heating = Burning
Heating means: D
Burning means: O2 (g)

8. When writing net ionic equations
Keep in mind that molecular compounds do not break into ions
Molecular compounds are composed of all nonmetals
H2O CO2 CH4 C3H7OH and many others.