Reaction Type Definitions
Single replacement reaction
A reaction where one element replaces another in a compound.
2H₂ + O₂ → 2H₂O
What type of reaction is this?
Synthesis
Na + Cl₂ →
NaCl
H₂ + O₂ → H₂O
Balance the equation.
2H₂ + O₂ → 2H₂O
Decomposition reaction
A reaction where one compound breaks down into simpler substances.
CaCO₃ → CaO + CO₂
What type of reaction is shown?
Decomposition
Al + O₂ →
Al₂O₃
Na + Cl₂ → NaCl
2Na + Cl₂ → 2NaCl
Double replacement reaction?
A reaction where ions in two compounds switch places to form two new compounds.
Zn + 2HCl → ZnCl₂ + H₂
What type of reaction is this?
Single replacement
CaCO₃ →
CaO + CO₂
Zn + HCl → ZnCl₂ + H₂
Zn + 2HCl → ZnCl₂ + H₂
Combustion reaction
A reaction where a hydrocarbon reacts with oxygen to produce carbon dioxide and water.
BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl
What reaction type is shown?
Double replacement
Zn + CuCl₂ →
ZnCl₂ + Cu
Synthesis reaction
A reaction where two or more substances combine to form one new compound. Pattern: A + B → AB
2Na + Cl₂ → 2NaCl
What type of reaction is this?
Synthesis (Combination)
KBr + Cl₂ →
KCl + Br₂