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