Question

Given the balanced equation representing a reaction:

4Al(s) + 3O2(g)-->2Al2O3(s)
Which type of chemical reaction is represented by this equation?
(1) double replacement
(2) single replacement
(3) substitution
(4) synthesis

Answer 1

The answer is (4) synthesis. Synthesis reaction means that two or more reactants combine directly to one production. Substitution or single replacement means that one element of a compound is replaced by another element. Double replacement means that two ionic reactants exchange ions to form two new productions.