Answer: synthesis and decomposition
Explanation:
1. A double displacement reaction is one in which exchange of ions take place.
[tex]XY+PQ\rightarrow XQ+PY[/tex]
2. Combustion is a type of chemical reaction in which hydrocarbons burn in the presence of oxygen to form carbon dioxide and water along with heat.
3. A single replacement reaction is one in which a more reactive element displaces a less reactive element from its salt solution.
[tex]XY+\rightarrow XZ+Y[/tex]
4. Synthesis is a type of chemical reaction when two reactants combine to give a single product.
[tex]A+B\rightarrow C[/tex]
5. Decomposition reaction is a type of chemical reaction in which one reactant gives two or more than two products.
[tex]C\rightarrow A+B[/tex]
