Classifying Chemical Reactions

There are four main types of chemical reactions. They are direction combination, decomposition, single-replacement, and double-replacement.

Direct Combination Reactions
A + B -> AB
EXAMPLE: 2 Na + Cl2 -> 2 NaCl

- Combustion reactions are direct combination when the products are carbon dioxide and water:
C2H5OH + 3 O2 -> 2 CO2 + 3 H2O

Decomposition Reactions
AB -> A + B
EXAMPLE: 2 H20 -> 2 H2 + O2

Single-Replacement Reactions
A + BX -> AX + B
EXAMPLE: Mg + CuSO4 -> Mg SO4 + Cu

Double-Replacement Reactions
AX + BY -> AY + BX
EXAMPLE: CaCO2 + 2 HCl -> CaCl2 + H2CO3

That is all. Mr. Doktor is the best!

-- done by Jael Lumba