ZnCO₃(s) → ZnO(s) + CO₂(g)

Here's a breakdown:

* ZnCO₃(s): Zinc carbonate in its solid state.

* ZnO(s): Zinc oxide, also in its solid state.

* CO₂(g): Carbon dioxide gas.

This reaction occurs when zinc carbonate is heated to a high enough temperature, causing it to break down into zinc oxide and carbon dioxide gas.