# Question c6e7b

Oct 10, 2014

The heating of solid copper(II) carbonate is a thermal decomposition reaction . The addition of heat energy causes chemical bonds to break and the reactant decomposes into two products.

Word Equation:

copper(II) carbonate + heat $\rightarrow$ copper(II) oxide + carbon dioxide

Molecular Equation:

"CuCO"_3("s") + heat $\rightarrow$ "CuO"("s") + "CO"_2("g")#

This reaction is accompanied by a color change. The green copper(II) carbonate turns into black copper(II) oxide.