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

  1. Assemble the correct formulas for all the reactants and products, using "+" and "~>"
  2. Count the number of atoms of each type appearing on both sides
  3. Balance the elements one at a time by adding coefficients where you need more
  4. 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