no it is the opposite, it is a composition reaction.
Decompostion reaction
Decompostion is to break down a substane.For example you can decompose a scientific equation.
12H2O+6CO2+energy ---> 6O2+C6H12O6+6H2O
Probable you think to a decompostion reaction.
the components of several molecules recombine to form new molecules.
the components of several molecules recombine to form new molecules.
This is an example of a chemical reaction known as decomposition, where a single compound breaks down into simpler substances. In this case, hydrogen peroxide (H2O2) decomposes into water (H2O) and oxygen gas (O2) through a catalyzed reaction.
A chemical reaction that breaks down molecules is called a decomposition reaction. In this type of reaction, a single compound is broken down into two or more simpler substances. An example is the breakdown of hydrogen peroxide into water and oxygen gas.
A chemical reaction in which a chemical substance breaks down to form tow or more simpler substance is called decompositon reaction,answer by Hamid lolai from Gkti
A chemical breaks down into other chemicals, e.g. A ---> B + C.
Phtosynthesis
No, it is considered a synthesis reaction (as the term photosynthesis might imply).If you look at the chemical equation however, you might consider it to be a backwards combustion reaction.