3. Combustion: What is it?  A combustion reaction is when an element or compound reacts with oxygen often producing energy in the form of heat or light.  Hydrogen and Oxygen are always present in a combustion reaction.

4. Examples of Combustion Lighters Rockets Bombs Fire Grills Cars Furnaces

5. Complete Combustion Reaction C H H H H CH 4 molecule + OO 2O 2 Molecule (Always Present!) CO 2 molecule Heat and or Light 2H 2 O molecule OO

6. Incomplete Combustion Reaction C H H H H CH 4 molecule + O O O 2 Molecule CO molecule Heat and or Light C H H H H O O O O O O C H H H H Answer:

7. Balancing a Combustion Equation Balancing a combustion equation is just like balancing a regular chemical equation.

8. Combustion Concept Practice a.Obama b.Water, heat and light c.A heatless explosion d.Love What substance is common to all combustion reactions? a.Oxygen and Hydrogen. b.Helium and Chlorine c.Mr. Sweeten d.Heat and Light Name the products of the combustion of a hydrocarbon.

9. Problem Solving Tips  The coefficients in a balanced chemical equation must be simplified. (Like a fraction) 2H 2 O+2O 2 H 2 O+O 2

10. Homework Questions Write a balanced equation for the complete combustion of C 6 H 6.

11. Mr. Sweeten