Copper carbonate decomposes though heat to form copper oxide and carbon dioxide. Write the equation both in words and chemical symbols.

well, you've done the words.

CuCO3 -> CuO + CO2
or
CuCO3(s) -> CuO(s) + CO2(g)

You can put a ∆ over the arrow to show addition of heat

The decomposition of copper carbonate can be represented both in words and chemical symbols.

Words: Copper carbonate decomposes into copper oxide and carbon dioxide when heated.

Chemical equation: CuCO3(s) → CuO(s) + CO2(g)

In the chemical equation, "(s)" represents a solid state, while "(g)" represents a gaseous state. Cu represents copper, C represents carbon, and O represents oxygen.