Chemical Reactions Newsletter

Katy Blevins - Hixon 2nd


Synthesis is a reaction in which two or more substances react to form a single substance.

A > B = AB

Ex : 2Na + Cl2 -> 2NaCl

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Decomposition is a reaction in which a compound breaks down into two or more simpler substances.

AB = A > B

Ex : 2H2O -> 2H2 + O2

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Single Replacement

Single replacement is a reaction in which one element takes the place of another element in a compound.

A + BC -> B + AC

Ex : 2K + 2H20 -> H2 + 2KOH

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Double Replacement

Double replacement is one in which two different compounds exchange positive ions and form two new compounds.

AB + CD -> AD + CB

Ex : H2C03 -> CO2 + H20

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Combustion is a reaction in which a substance reacts rapidly with oxygen.

CH + O2

Ex : 2H2 + O2 -> 2H20

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