Question

What kind of change occurs when carbon dioxide burns in the air to form carbon dioxide?

Answer 1

Carbon dioxide (chemical formula CO2) is a colorless gas with a density about 60% higher than that of dry air. Carbon dioxide consists of a carbon atom covalently double bonded to two oxygen atoms. It occurs naturally in Earth's atmosphere as a trace gas.

Answer 2

Diamond is a form of carbon and also burns in air when heated to 600-800°C - an expensive way to make carbon dioxide.