Chemical Reactions
Page 10- Amber Lennox
Types of Chemical Reactions
- Combination (Synthesis) E+E ~>C
- Decomposition C ~> E+E
- Single Replacement E+C ~> E+C
- Double Replacement C+C ~> C+C
- Combustion C#H#+O2 ~> CO2+H2O
Rules to Balancing a Chemical Equation
- Assemble the correct formulas for all the reactants and products, using "+" and "~>"
- Count the number of atoms of each type appearing on both sides
- Balance the elements one at a time by adding coefficients where you need more
- Double check to make sure its balanced
Chemical Reaction Examples
- Combination (synthesis) Ex: 8 Fe + S8 → 8 FeS
- Single Replacement Ex: Zn + 2 HCl → ZnCl2 + H2
- Double Replacement Ex: NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s)
- Combustion Ex:C10H8 + 12 O2 → 10 CO2 + 4 H2O
- Decomposition Ex: 2 H2O → 2 H2 + O2