is it correct to say that a decomposition reaction is an endothermic process? explain

Yes, it is correct to say that a decomposition reaction can be an endothermic process, but it's not always the case.

A decomposition reaction is a type of chemical reaction where one compound breaks down into two or more simpler substances. This can be represented by the general equation: AB → A + B.

Whether a decomposition reaction is endothermic or exothermic depends on the specific reaction and the substances involved.

An endothermic process is one that absorbs heat from its surroundings. This means that the reaction will only proceed if heat is supplied to the system. In the case of an endothermic decomposition reaction, the reactant absorbs heat to break down into its constituent parts. An example of this is the decomposition of water into hydrogen and oxygen gas.

On the other hand, an exothermic process is one that releases heat to its surroundings. Some decomposition reactions are exothermic. For example, the decomposition of potassium chlorate into potassium chloride and oxygen gas is an exothermic reaction.

So, while it's possible for a decomposition reaction to be endothermic, it's not a rule. Whether a reaction is endothermic or exothermic depends on the specific substances and conditions involved.