C.+Christie+and+C.+Ward+Teaching+Reactions+Wiki

=__Teaching Reactions__= By: Craig Christie and Cody Ward


 * __Brief Discription of the Five Main Chemical Reactions:__**

There are five main different types of chemical reactions. These reactions include synthesis, decomposition, single-displacement, double-displacement, and combustion. Each reaction has its own unique properties that separate it from the other four**.** __**Synthesis**__ is when two atoms combine to form one single compound. **__Decomposition__** is thought of as the opposite. It starts out as one single compound and breaks down into two or more simpler atoms. **__Single-Displacement__** is when one lone atom replaces another atom from a compound. During this reaction, a free atom would become an ion and an ion would become a free element. Similarly, **__Double-Displacement__** is when the positive ion of one compound replaces the positive ion of the other compund to produce two new compounds. Lastly, **__Combustion__** occurs when a substance is combined with oxygen and produces one or more oxides, commonly known as carbon dioxide (CO2) and water (H2O).

__**In Depth Description of Each Reaction:**__


 * Synthesis
 * Decomposition
 * Single-Displacement
 * Double-Displacement
 * Combustion


 * __Balancing Chemical Formulas:__**

To balance a chemical formula, one counts the number of atoms per substance on both sides of the equation. If the number of atoms per substance on one side is equal to the number of atoms on the other side, it is balanced. To see the number of atoms in a substance one can look in two places. Sometimes, in front of an element or compound there is a number known as a coefficient. This number applies to everything after it until the addition symbol. There can also be a subscript to the right of an element or substance. Both of these numbers correspond to how many atoms of an element or compund there are. To balance equations one must consider these numbers. It is not possible to change subscripts unlike coeffecients which is almost always necessary.