Balancing & Reaction Types

Match the following equations to their type.

• Decomposition

• 2H₂ + O₂ → 2H₂O

• Double - Replacement

• 2HgO → Hg + O₂

• Synthesis

• K₂CO₃ + BaCl₂  → 2KCl + BaCO₃ 

• Combustion

• K + ZnCl₂ → KCl + Zn

• Single - Replacement

• CH₄ + 2O₂ → CO₂ + H₂O

KClO₃ --> KCl + O₂

• Synthesis
• Combustion
• Single
• Decomposition

C₃H₆O + 4O₂ --> 3CO₂ + 3H₂O

• Combustion
• Single
• Double
• Synthesis

Cl₂ + NaBr --> NaCl + Br₂

• Single
• Combustion
• Double
• Decomposition

Al2(SO4)₃+ Ca(OH)₂ --> Al(OH)₃ + CaSO₄

• Synthesis
• Decomposition
• Single
• Double

NaOH + HCl --> NaCl + H₂O

• Double
• Single
• Decomposition
• Combustion

Pb(NO₃)₂ →PbO + NO₂ + O₂

• Synthesis

• Decomposition

• Single replacement

• Combustion

How many oxygen atoms are in the reactants of C₂H₂ + 3O₂→2CO₂ +2H₂O?

• 6

• 4

• 2

• 3

What chemical reaction type always has the products CO₂ + H₂O?

• Synthesis

• Acid Base

• Combustion

• Decomposition

Which type of reaction has only one reactant?

• synthesis

• Double replacement

• Chemical reaction

• decomposition