Types of Chemical Reactions

Ch. 16

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Types of Chemical Reactions

A. Synthesis Reaction – 2 or more simple substances combine to form a more complex substance

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Types of Reactions

Generic Example:

A + B AB

Real Example:

2H2 + O2 2H2O

*More than 1 reactant, only 1 product

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Types of Reactions

B. Decomposition Reaction (opposite of synthesis) – a more complex substance breaks down into 2 or more simple substances

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Types of Reactions

Generic Example:

AB A + B

Real Example:

2H2O 2H2 + O2

*Only 1 reactant, more than 1 product

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Types of Reactions

C. Single Replacement Reaction – a single element replaces another in a compound

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Types of Reactions

Generic Example:

A + BC AC + B

Real Example:

Zn + 2HCl ZnCl2 + H2

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Types of Chemical Reactions

D. Double Replacement Reaction – parts of 2 compounds switch places to form 2 new compounds

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Types of Chemical Reactions

Generic Example:

AB + CD AD + CB

Real Example:

AgNO3 + NaCl AgCl + NaNO3

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Types of Chemical Reactions

E. Combustion - a substance reacts with oxygen (O2) and releases E and heat or light

Generic Example:

________ + O2 CO2 + H2O + …?

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Types of Reactions

Real Example:

2C2H6 + 7O2 4CO2 + 6H2O