Balanced or Not

Questions 1, 3, 7, 9 are balanced the others are not.

Six types of Reactions

  1. 2, 1, 1, 2      double replacement
  2. 2, 1, 1        synthesis
  3. 1, 9, 5, 9      combustion
  4. 3, 2, 3, 1      single replacement
  5. 1, 3, 3, 1      double replacement
  6. 3, 1, 3, 1      double replacement

On the Side

  1. 2, 1, 1
  2. 2, 1, 2
  3. 2, 1, 2
  4. 1, 5, 1
  5. 2, 2, 2, 1