Types of Chemical Reactions

Antonio Rodriguez

Synthesis

It is a reaction in which two or more substances react to form a single substance
Equation: A + B --> AB
Example: C + O2 --> CO2
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Decomposition

Is a reaction in which a compound breaks down into two or more simpler substances
Equation: AB --> A + B
Example: 2HgO ---> 2Hg + O2
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Single Replacement

Is a reaction in which one element takes the place of another element in a compound.
Equation: A + BC ---> B + AC
Example: Zn + CuCl2 --> ZnCl2 + Cu
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Double Replacement

Is one in which two different compounds exchange positive ions and form two new compounds.

Equation: AB + CD -----> AB + CB
Example: NaCL + AgNO3 ---> NaNO3 + AgCl
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Combustion

Is one in which a substance reacts rapidly with oxygen, often producing heat and light.

Equation: CH4 + 202 ----> C02 + 2H20
Example: 2H2 + O2 ----> 2H20
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