The thermochemical equation for the reaction in which calcium carbonate breaks down is shown below. how can the reaction be described?

Answer is: chemical decomposition or analysis.

Balanced chemical reactio: CaCO₃(s) → CaO(s) + CO₂(g).
CaCO₃ is calcium carbonate.
CaO is calcium oxide.
CO₂ is carbon (IV) oxide or carbon dioxide.
Chemical decomposition is the separation of a single chemical compound (in this example calcium carbonate) into its two or more simpler compounds (in this example calcium oxide and carbon dioxide).

Answerchemical energy;