question below in the description

Question

Match each reaction below with its type of reaction. descripe all the rections with the names

1. 4Al + 3O2 → 2Al2O3	single replacement
2. 3O2 + C2H4 → 2CO2 + 2H2O	decomposition
3. 2Li + 2HCl → 2LiCl + H2	. synthesis
4. Ba(NO3)2 + K2SO4 → 2KNO3 + BaSO4	double replacement
5. CaCO3 → CaO + CO2

Answer 1

1) 4Al + 3O₂ → 2Al₂O_{3. Synthesis reaction— where two or more reactants combine to form a single product.}

2. 3O₂ + C₂H₄ → 2CO₂ + 2H₂O It is a combustion reaction but not given in your choices.

3. 2Li + 2HCl → 2LiCl + H_{2. Single replacement reaction— When one ion takes the place of another ion in a single compound.}

4. Ba(NO₃)₂ + K₂SO₄ → 2KNO₃ + BaSO_{4. Double replacement reaction — When two compounds exchange ions. This produces two new compounds.}

5. CaCO₃ → CaO + CO_{2. Decomposition reaction— reverse of a synthesis reaction where one reactant breaks down into two or more products.}