The chemical formula of copper carbonate is considered to be Cu(OH)2CO3.
copper(II) carbonate or cupric carbonate
Copper and carbonate ions form copper carbonate. In practice, copper carbonate usually contains hydroxide ions as well.
The compound you are referring to is copper carbonate, which has the chemical formula CuCO3. It is also known as copper(II) carbonate and is commonly found in nature as the mineral malachite.
Copper Carbonate
When copper carbonate reacts with potassium, it forms copper metal and potassium carbonate. This reaction is a redox reaction where copper is reduced and potassium is oxidized.
Copper carbonate would precipitate if you combined solutions of copper (II) chloride and sodium carbonate.
The precipitate formed when copper sulfate and sodium carbonate are mixed is copper carbonate. This reaction occurs because copper carbonate is insoluble in water and therefore forms a solid precipitate.
Copper carbonate is a solid compound at room temperature.
Copper(II) Carbonate (or Cupric Carbonate) is made up of Copper ions, and Carbonate ions. The coppers have a +2 charge, and carbonate has a -2 charge. The formula is Cu(II)CO3
copper carbonate
The chemical formula of copper (I) carbonate is Cu2CO3.
Carbonate by itself is an ion that does not contain copper and therefore could not produce copper if heated. However, because carbonate is a negatively charged ion, no substantial number of carbonate ions can exist stably except in association with an equal number of positively charged cations to neutralize the electrical charge of the carbonate ions. If these cations are cations of copper, then copper oxide can be produced by heating the copper carbonate salt.