Five Types of Chemical Reactions

Mikayla Iddings

Synthesis

Definition: A reaction in which two or more substances react to form a single substance.

A + B --> AB

Example: 2Na + Cl(2)

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Decomposition

Definition: A reaction in which a compound breaks down into two or more simpler substances.

AB --> A + B

Example: 2H(2)O --> 2H(2) + O(2)

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Single-Replacement

Definition: A reaction in which one element take the place of another element in a compound

A + BC --> B + AC

Example: 2K + 2H(2)O --> H(2) + 2KOH

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Double-Replacement

Definition: One in which two different compounds exchange positive ions one form two new compounds

AB + CD --> AD + CB

Example: CaCO(3) + 2HCl --> CaCl(2) + H(2)CO(3)

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Combustion

Definition: One in which a substance reacts rapidly with oxygen, often producing heat and light.

C(-)H(-) + O(2) --> CO(2) + H(2)O

Example: CH(4) + 2O(2) --> CO(2) + 2H(2)O

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