Decomposition

__Decomposition Reactions__
__Definition:__ In a decomposition reaction, a single compound undergoes a reaction that produces two or more simplier substances. It can be represented by the following equation. In this equation, AX represents the compound, and A and X represent the simplier substances.
 * AX> A + X**

__Simple Equation__

KRb---> K + Rb This says that Potassium Rubidium (KRb) Decomposes into Potassium (k) and robidium (Rb).

__Word Equation and Balancing__ Q: When calcium carbonate is heated calcium oxide and carbon dioxide is formed. Step 1) Write the symbols that represent the word equation. Ca(CO3)-> CaO + CO2 2) Check for elements that have to be written as X2. (In our equation we dont have any lone unstable elements) 3) Set up a table to check that each side is balanced and has the same amount of atoms as the other.

Reactants Substance Product

1 Ca 1 1 C 1 3 O 3

In our equation, we do not have to balance any substance since every one is equally represented on both sides. Our final equation: **Ca(CO3)---> CaO + CO2**

 