Question

A thermal decomposition reaction in which a compound decomposes to give two new compounds.

Answer 1

Thermal decomposition reaction

Thermal decomposition is a chemical reaction where a single substance breaks into two or more simple substances when heated.

Example: $$\begin{gathered} {\mathrm{CaCO}}_3\left(\mathrm{s}\right)\stackrel{∆}{\to }\mathrm{CaO}\left(\mathrm{s}\right)+{\mathrm{CO}}_2\left(\mathrm{g}\right) \\ \mathrm{Calcium}\mathrm{carbonate}\mathrm{Calcium}\mathrm{oxide}\mathrm{Carbon}\mathrm{dioxide} \end{gathered}$$

When calcium carbonate$\left({\mathrm{CaCO}}_3\right)$ is heated, it breaks into calcium oxide$\left(\mathrm{CaO}\right)$ and carbon dioxide$\left({\mathrm{CO}}_2\right)$.