1. Combustion
exothermic chemical reactions between a fuel and an oxidant accompanied by the production of heat or both heat and light in the form of either a glow or flames.

2. Burning-Breaking Chemical Bonds to release ENERGY!
Reactants  Products
CH O N2  HEAT! + CO2 + H2O + NOx Sox
methane oxygen nitrogen energy carbon dioxide water vapor nitrogen sulfur
gas oxides oxides

3. Which product do we want?
ENERGY

4. Which reactant are we breaking the bonds of to release the energy?
METHANE

5. Which reactant is necessary for combustion to occur?
OXYGEN in the air
What percentage of air is oxygen?

6. How do the other products effect our environment?
Which product is a greenhouse gas?
CO2

7. Which product by itself is NOT a problem?
H2O (steam)

8. Which two products when mixed with water can result in ACID RAIN?
NOx and SOx
nitrogen oxides sulfur oxides
What would happen if you were to breathe in these oxides?