They are used as a pigment in products, paints, and varnishes. cupric carbonate  is used in artist paints to obtain desired colors for which it is also known with different names such as verditer and mountain green. cupric carbonate  is highly demanded in fireworks and pottery glazes as pigment and colorant.

Zinc chloride is the name of chemical compounds with the formula ZnCl2 and its hydrates. Zinc chlorides, of which nine crystalline forms are known, 

Copper(II) carbonate or cupric carbonate is a chemical compound with formula CuCO
 At ambient temperatures, it is an ionic solid (a salt) consisting of copper(II) cations Cu2+
 and carbonate anions

Copper carbonate is green and copper oxide is black. You can see a colour change from green to black during the reaction.

CUPRIC CARBONATE (BASIC) LR