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Types of Chemical Reactions Assignment

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Emma Jennings

on 20 May 2015

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Transcript of Types of Chemical Reactions Assignment

Chemical decomposition, analysis or breakdown is the separation of a chemical compound into elements or simpler compounds.
Single Displacement:
Single displacement:
A + BC = B + AC
a type of reaction in which multiple reactants combine to form a single product
A + B = AB
The reaction of oxygen and a compound containing hydrogen and carbon
CH4 + O2 ---> CO2 + H2O

Types of Chemical Reactions Assignment
Double Displacement
This happens in nature during the combustion of methane. The process consists of a reaction between methane and oxygen in the air. When the reaction takes place, the outcome is carbon dioxide, water and energy.
This happens is nature with water. Water is the combination of 2 Hydrogen [H] and an Oxygen [O] that creates H2 O, water.
Decomposition is present in nature when carbon dioxide is made from CaCO3. It goes from
CaCo3 ---> CaO + CO2
Single displacement can be found in nature during the reaction of sodium and chlorine to form sodium chloride 2Na(s) + Cl2(g)---> 2NaCl(s) which is present in out salt water seas/oceans and makes up our table salt.

Double Displacement:
AB + DC = CB + AD
Precipitation reaction. Precipitation reactions occur when the exchange of ions results in an insoluble salt. In double displacement reactions between acids and bases, hydrogen ions form acids and hydrogen ions from bases that combine together to form water molecules. The anions from the acids and cations from the bases combine to form salts. If the salts are double in water, they will form ions in the water solution, if the salts are insoluble in water they will appear as a precipitate.
Methane gas
Shows how the atoms have combined to form a single product, water [H2O]
salt water ocean
Table salt
Both made up of sodium chloride
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