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Types of Chemical Reaction

There are total five types of chemical reaction.

  1. Synthesis
  2. Combustion
  3. Decomposition
  4. Single displacement
  5. Double displacement

Synthesis means one or two simpler compound reacts to form a more complicated compound. In short two simple reactants reacts to form a complex product is called as synthesis.

Example: Hydrogen reacts with oxygen to form water and with chloride to form hydrochloric acid

2H2 + O2 2H2O
2 + Cl2

Combustion is a process where oxygen reacts with compound to form water and carbon dioxide. In this reaction heat is generated so it is called as exothermic reaction.

Example: Methane reacts with oxygen to form carbon dioxide and water.

CH4 + 2O2 CO2 + 2H2O

Decomposition means a complex molecule breaks down in a single compound where energy is required to break the molecule so it is called as endothermic reaction.

Example: Water is break down into hydrogen and oxygen molecules

2 H2O 2H2 + O2 

Single displacement:
Single displacement means one element replaces by another in a compound.

Example: zinc reacts with hydrochloric acid to form zinc chloride

Zn + 2HCl
ZnCl2 + H2

Double displacement:
Double displacement means two different molecules switch places to form two entirely different compounds.

Example: Silver nitrate combines with sodium chloride to form silver chloride and sodium nitrate

AgNO3 + NaCl AgCl + NaNO3 © 2017 | Contact us | Terms of Use | Privacy Policy | Yellow Sparks Network
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