Question

When metal carbonates are heated strongly, metal oxides are formed.

• A. True
• B. False

Answer 1

The correct option is A True

• Decomposition reaction - A reaction in which a single compound is broken down into two or more simpler substances is known as a decomposition reaction.
• When decomposition is carried out by heating, it is called thermal decomposition.
• When metal carbonates are heated strongly, metal oxides are formed.
• Example - Decomposition of calcium carbonate$\left({\mathrm{CaCO}}_3\right)$ forms calcium oxide$\left(\mathrm{CaO}\right)$ and carbon dioxide gas$\left({\mathrm{CO}}_2\right)$.

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

Therefore, the given statement is true.