Chemical Reactions Answers

1.     Classify the following chemical reactions as Synthesis (S), Decomposition (D), Combustion (C), Single displacement (SD), or Double displacement (DD).

a)      2 H₂O → 2 H₂ + O₂ ____D____

b)     8 Fe + S₈ → 8 FeS ____S____

c)      AgNO₃ + NaCl → AgCl + NaNO₃ ____DD____

d)      Zn + H₂SO₄ → ZnSO₄ + H₂ ___SD_____                                                   

               e)      CH₄(g) + 2 O₂(g) → CO₂(g) + 2 H₂O(g) ____C____

2. Complete and balance (if necessary) the following chemical equations 

a) C₆H₁₂O₆ + ___6___O₂ à ___6__CO₂ + ___6___H₂O

b) ___2___C₇H₁₄ + ___21___O₂ à ___14____CO₂ + ____14___H₂O