Answer :
Final answer:
The change in limestone when subjected to high heat, resulting in calcium oxide and carbon dioxide gas, is an example of decomposition, a type of chemical reaction.
Explanation:
The change in limestone (calcium carbonate, CaCO3) when subjected to high heat resulting in calcium oxide (CaO) and carbon dioxide gas (CO2) is an example of decomposition.
During this process, a single compound breaks down into two or more simpler substances when heated, which is a classic chemical reaction often seen with carbonates such as limestone.
The reaction can be represented by the following equation: CaCO3 → CaO + CO2. This is a fundamental chemical process extensively used in various industries, like the production of quicklime, which has historically been important.
