Final answer:
The statement that lime (CaO) is produced by heating calcium carbonate (CaCO₃) and releasing carbon dioxide is true. Calcium oxide, also known as quicklime, has important uses in the construction industry and was historically used for stage lighting. The correct option is A.
Step-by-step explanation:
The statement that lime, CaO, is produced by heating calcium carbonate, CaCO₃, with carbon dioxide as the other product, is true. This is a common thermal decomposition reaction used in various industries. Calcium carbonate, which is found abundantly as limestone or oyster shells, is heated at high temperatures to release carbon dioxide gas and leave behind calcium oxide, also known as quicklime.
Quicklime has a multitude of uses, such as in the production of cement and mortar, and historically, it was used to create stage lighting known as 'limelight' due to its intense white light when heated to high temperatures.
Another application of calcium oxide is its reaction with water to produce slaked lime, Ca(OH)₂, which is also highly important in construction for making mortar and plaster. This reaction is notably exothermic. The importance and reactivity of calcium oxide make it a substance with significant industrial utility, contrasting with the oxides of alkali metals.