Decomposition+Brock

__**Decomposition**__
Decomposition is when one unique molecule break down into two or more parts. The equation is set up like this: A => B + C

An example of a decompostion reaction is: Iron reacts with oxygen to form iron(III) oxide

To put this into an equation we must figure out the charges and then do the switcheroo to find out the equation. So since iron is by itself we just have an Fe, by itself. Since we need two oxygen together, because it cannot be by itself because it would be too unstable, we have O2. And finally since the charges of iron(III) oxide are 3+ and 2- we result in Fe2O3. So the equation appears as: Fe + O2 => Fe2O3

The problem with this equation is it's not balanced. To balance it we need to make sure that there is the same number of each element on each side. When balanced the equation looks like this: 4Fe +3O2 => 2Fe2O3

To make sure we have it balanced correctly, we can make a chart.

__4__ Fe __4__ __6__ O __6

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