Areaction requires water as a reactant and produces heat. what type of reaction is likely to be involved?

decomposition reaction

Explanation:

Chemical reaction is the process that involves the transformation of chemical elements or compounds into one, two or more products.

There are many types of chemical reaction and few are: combination reactions, displacement Reaction, reduction-oxidation Reaction, decomposition Reaction and so on.

But in this question; the Chemical Reaction involved is a decomposition reaction. Decomposition reaction is a chemical reaction that involves the breaking of one substance to simpler substances.

THINGS TO NOTE: (1). the reaction require water as a reactants. A popular reaction that requires water as a reactants is the electrolysis of water.

(2). The reaction produces heat. Normally, a decomposition Reaction is an endothermic reaction, but at some cases it changes to exothermic because of some conditions e.g the atmospheric condition.

sry but any answer choices

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.