Monday, January 11, 2010

jan 8 - types of chemical reactions

1) Synthesis

A+B ----> C (Two or more substances combine)
EX: H2 + Cl2 ----> 2HCl

6) Combustion


AB---->A+B (Breaking down into simpler substances)
EX: 2Ag2O---->4Ag + O2

3) Single Replacement


A + BX---->B + AX (Compunds must have a metal and a nonmetal-replacing one atom in a compound by anohter atom)
EX: Cl2 + 2KI ----> I2 + SKCl

4) Double Replacement

AB + XY ----> AY + XB (exchange of atoms between two different compounds)
EX: 2NaCl+ H2SO4 ----> 2 HCl + Na2SO4

5) Neutralization

(Products are water and an ionic salt/ Always between acids and bases)
EX: HCl + NaOH----> NaCL + H2O

6) Combustion

There are two types: Metallic (Can also be known as a synthesis reaction/includes oxygen) and hydro-carbon (includes carbon and oxygen). Also, the productes are always CO2 and H2O

EX: C5H12 + 8 O2 ----> 5CO2 + 6 H2O

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