# How do synthesis and decomposition reactions differ?

Dec 8, 2016

See the explanation.

#### Explanation:

Synthesis reactions occur when two or more simpler substances (atoms, ions, molecules) react to produce a single product.

Hydrogen peroxide is synthesized by the reaction between water and oxygen.

$\text{2H"_2"O" + "O"_2}$$\rightarrow$$\text{2H"_2"O"_2}$

Decomposition reactions occur when a single compound is broken down into simpler products.

Potassium chlorate decomposes to produce potassium chloride and oxygen.

$\text{KClO"_3}$$\rightarrow$$\text{KCl + O"_2}$