Chemistry (Classification of Chemical Reactions), Classifications of Chemical Equations
Chemical Equation
A symbolic representation of what is occurring during a chemical reaction
Double Replacement
A(+)B(-) + C(+)D(-) -> A(+)D(-) + C(+)B(-)
Decomposition
AB -> A + B
Diatomics
Br2, I2, N2, Cl2, H2, O2, F2
C.H.O. (combustion)
Balance carbons, then hydrogens, and finally oxygens
2H2O -> 2H2 + O2
Decomposition
2H2O2 -> 2H2O + O2
Decomposition
2HgO -> 2Hg + O2
Decomposition
AgNO3 + NaCl -> AgCl + NaNO3
Double Replacement
Ca(OH)2 + H2SO4 -> CaSO4 + 2H2O
Double Replacement
If the oxygen on the product sidr does not match the reactant side ________.
Double all coefficients beside O2
Combustion
HC + O2 -> CO2 + H2O
Free element "A" must be _______ than the ANION in the compound for a reaction
Higher
Free element "A" must be _______ than the CATION in the compound for a reaction
Lower
2KBr + Cl2 -> 2KCl + Br2
Single Replacement
Zn + H2SO4 -> ZnSO + H2
Single Replacement
2CO + O2 -> 2CO2
Synthesis
2H2 + 02 -> 2H2O
Synthesis
CaO + H2O -> Ca(OH)2
Synthesis
Acids (Decomp)
acid -> nonmetallic oxide + HOH
aq
aqueous (dissolves in H2O)
Bases (Decomp)
base(Metal hydroxide) -> metallic oxide + HOH
g
gas
l
liquid
Metal Carbonates (Decomp)
metallic carbonate -> metal oxide + CO2
Metal Chlorate (Decomp)
metallic chlorate -> metal chloride + O2
Metal Nitrate (Decomp)
metallic nitrate -> metal nitrite + O2
Metal Oxides (Decomposition)
metallic oxide -> metal + O2
Peroxides (Decomp)
metallic oxide -> metal oxide + O2
s
solid (precipitates)
Reactant
the starting product that undergoes change
Product
the substance formed from the reaction
Chemical Reaction
when chemical substances undergo fundamental identity changes
->
yields
Synthesis (Combination)
A + B -> AB
Single Replacement
A + B(+)C(-) -> A(+)C(-) + B A + B(+)C(-) -> B(+)A(-) + C
