Decomposition

flat =Description= __**Description of Suspect and Behavior (Description of Reaction & General Equation)**__ In a decomposition reaction a more complex substance breaks down into its more simple parts. One reactant yields 2 or more products. Basically, synthesis and decomposition reactions are opposites. AB = A+B =Examples= __**Examples Illustrating the behavior (Equations)**__ 2HgO --> 2Hg + O2 FeS --> Fe + S 2H2O --> 2H2+ O2 CaCO3 > CaO + CO2 2Cl2O5 → 2Cl2 + 5O2 MnO2 + 2H2O2 > MnO2 + O2 + 2H2O Mg3N2 ---> Mg3 + N2 2NaCl-->2Na+2Cl =Real-Life Examples= __**Real-Life examples showing this behavior and documentation (with equations and video/picture)**__ Decomposition making cement Calcium carbonate + heat --> quicklime + carbon dioxide CaCO3 + (heat) --> CaO + CO2
 * DECOMPOSITION REACTION**

Carbonates will decompose when heated, a notable exception being that of carbonic acid, H2CO3. Carbonic acid, the "fizz" in sodas, pop cans and other carbonated beverages, will decompose over time (spontaneously) into carbon dioxide and water H2CO3 → H2O + CO2

Thomas Roberts Sugar- C6H12O6 -> 6CO2 + 6H2

Fermentation of Grapes to make Wine C6H12O6 → 2C2H 6 O + 2CO2

Electrolysis of water 2H2O --> 2H2 + O2 =Heating sodium bicarbonate produces CO2 gas 2NaHCO3 --> Na2CO3 + CO2 + H2O=

Electrolysis of Water 2H2O ---> 2H2 + O2

Decomposition of Copper Carbonate Copper carbonate =heat=> Copper oxide + carbon dioxide

A common decomposition of a chlorate to evolve oxygen utilizes [|potassium chlorate] as follows: 2KClO3 → 2KCl + 3O2 =S= A common decomposition of a chlorate to evolve oxygen utilizes [|potassium chlorate] as follows: 2KClO3 → 2KCl + 3O2tudent Experiments __**Re-creation of the crime (Student experiment illustrating the reaction with video)**__


 * Alcohol Rocket**
 * Thomas Roberts and David Mellott**