Types of Chemical Reactions

By: Ellie Burch

Synthesis:

  • Definition: a type of reaction in which multiple reactants combine to form a single product
  • Equation: A+B --> AB
  • Examples: Fe(2) + O(2) --> FeO(2) & 2Li + Cl(2) --> 2LiCl
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Decomposition:

  • Definition: analysis or breakdown is the separation of a chemical compound into elements or simpler compounds
  • Equation: AB --> A+B
  • Examples: 2HgO --> 2Hg + O(2) & BC --> B + C
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Single Replacement:

  • Definition: is a type of oxidation-reduction chemical reaction when an element or ion moves out of one compound and into another - that is, one element is replaced by another in a compound.
  • Equation: A + BC --> B + AC
  • Examples: A + BX --> B + AX and D + AB --> A + DB
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Double Replacement:

  • Definition: a type of chemical reaction where two compounds react, and the positive ions and the negative ions of the two reactants switch places, forming two new compounds or products.
  • Equation: AB + CD --> AD + CB
  • Examples: AgN(3) + NaCl + NaNO(3) & MgO+ CaS --> MgS + CaO
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Combustion:

  • Definition: reaction in which one of the reactants is oxygen. ▪ The other reactant is usually a hydrocarbon.
  • Equation: C(6)H(14) + O(2) --> CO(2) + H(2)O
  • Examples: Fe(2)O(3) + C --> Fe + CO(2) & CH(4) + 2O(2) --> CO(2) + 2H(2)O
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