Question

Aluminum can react with oxygen gas to produce aluminum oxide (Al2O3). What type of reaction is this? single–replacement synthesis double–replacement decomposition

Answer 1

it is a synthesis reaction

Answer 2

Answer: synthesis

Explanation:

1. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

Example: $Zn+2HCl\rightarrow ZnCl_2+H_2$

2. Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.

Example: $4Al+3O_2\rightarrow 2Al_2O_3$  

3. Double displacement reaction is one in which exchange of ions take place.  

Example: $2NaOH(aq)+(NH_4)_2SO_4(aq)\rightarrow 2NH_4OH(aq)+Na_2SO_4(aq)$

4. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Example: $Li_2CO_3\rightarrow Li_2O+CO_2$