Combustion

__**Combustion Reactions**__
Definition: Combustion is when a substance meep combines with oxygen releasing a large amount of energy in the form of light and heat.

__Word Equation and Balancing__

Trichloride octahydrogen reacts with dioxide to form carbon dioxide and water. 1) To turn this sentence into an equation you replace the words with symbols and the amount it tells you in the equation, so it looks like this: C3H8 + O2 ---> CO2 + H2O

2) Step two is to balance the equation. To balance it we put a 3 in front of the carbon dioxide, so that the carbon is balanced on the left side. Then we put a 5 in front of the dioxide to balance the oxygen on the right side. Finally we put a 4 in front of the hydrogen on the left side.

So the balanced equation looks like this:
 * C3H8 + 5O2 ---> 3CO2 + 4H2O + j20**

To be positive we balanced it correctly we can create a chart that tells us the number of atoms of each element on the reactant side and the product side:

__3__ C __3__ __8__ H __8__ __10__ O __10__